Attachment 357380 Details for Bug 192735 – Patch

[patch] Patch

bug-192735-20181214193524.patch (text/plain), 87.61 KB, created by Megan Gardner on 2018-12-14 19:35:25 PST

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Creator: Megan Gardner

Created: 2018-12-14 19:35:25 PST

Size: 87.61 KB

patch

obsolete

>Subversion Revision: 239171
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index c7c333bbc491e236532813334d0f41a531b75075..d92f1456b41cde729f53b241276aea47c36bdd80 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,76 @@
>+2018-12-14  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Allow clients to set the navigator platform
>+        https://bugs.webkit.org/show_bug.cgi?id=192735
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Expanded TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm.
>+
>+        Lots of piping to allow the setting of a custom navigator platform.
>+
>+        * dom/Document.cpp:
>+        (WebCore::Document::navigatorPlatform const):
>+        * dom/Document.h:
>+        * dom/ScriptExecutionContext.h:
>+        * loader/DocumentLoader.h:
>+        (WebCore::DocumentLoader::setCustomNavigatorPlatform):
>+        (WebCore::DocumentLoader::customNavigatorPlatform const):
>+        * loader/EmptyFrameLoaderClient.h:
>+        * loader/FrameLoader.cpp:
>+        (WebCore::FrameLoader::navigatorPlatform const):
>+        * loader/FrameLoader.h:
>+        * loader/FrameLoaderClient.h:
>+        * page/Navigator.cpp:
>+        (WebCore::Navigator::platform const):
>+        * page/Navigator.h:
>+        * page/NavigatorBase.cpp:
>+        (WebCore::NavigatorBase::platform): Deleted.
>+        * page/NavigatorBase.h:
>+        * page/WorkerNavigator.cpp:
>+        (WebCore::WorkerNavigator::WorkerNavigator):
>+        (WebCore::WorkerNavigator::platform const):
>+        * page/WorkerNavigator.h:
>+        * workers/DedicatedWorkerGlobalScope.cpp:
>+        (WebCore::DedicatedWorkerGlobalScope::create):
>+        (WebCore::DedicatedWorkerGlobalScope::DedicatedWorkerGlobalScope):
>+        * workers/DedicatedWorkerGlobalScope.h:
>+        * workers/DedicatedWorkerThread.cpp:
>+        (WebCore::DedicatedWorkerThread::DedicatedWorkerThread):
>+        (WebCore::DedicatedWorkerThread::createWorkerGlobalScope):
>+        * workers/DedicatedWorkerThread.h:
>+        * workers/Worker.cpp:
>+        (WebCore::Worker::notifyFinished):
>+        * workers/WorkerGlobalScope.cpp:
>+        (WebCore::WorkerGlobalScope::WorkerGlobalScope):
>+        (WebCore::WorkerGlobalScope::navigatorPlatform const):
>+        (WebCore::WorkerGlobalScope::navigator):
>+        * workers/WorkerGlobalScope.h:
>+        * workers/WorkerGlobalScopeProxy.h:
>+        * workers/WorkerMessagingProxy.cpp:
>+        (WebCore::WorkerMessagingProxy::startWorkerGlobalScope):
>+        * workers/WorkerMessagingProxy.h:
>+        * workers/WorkerThread.cpp:
>+        (WebCore::WorkerThreadStartupData::WorkerThreadStartupData):
>+        (WebCore::WorkerThread::WorkerThread):
>+        (WebCore::WorkerThread::workerThread):
>+        * workers/WorkerThread.h:
>+        * workers/service/ServiceWorkerGlobalScope.cpp:
>+        (WebCore::ServiceWorkerGlobalScope::create):
>+        (WebCore::ServiceWorkerGlobalScope::ServiceWorkerGlobalScope):
>+        * workers/service/ServiceWorkerGlobalScope.h:
>+        * workers/service/context/ServiceWorkerThread.cpp:
>+        (WebCore::ServiceWorkerThread::ServiceWorkerThread):
>+        (WebCore::ServiceWorkerThread::createWorkerGlobalScope):
>+        * workers/service/context/ServiceWorkerThread.h:
>+        * workers/service/context/ServiceWorkerThreadProxy.cpp:
>+        (WebCore::ServiceWorkerThreadProxy::ServiceWorkerThreadProxy):
>+        * workers/service/context/ServiceWorkerThreadProxy.h:
>+        * worklets/WorkletGlobalScope.cpp:
>+        (WebCore::WorkletGlobalScope::userAgent const):
>+        (WebCore::WorkletGlobalScope::navigatorPlatform const):
>+        * worklets/WorkletGlobalScope.h:
>+
> 2018-12-13  Eric Carlson  <eric.carlson@apple.com>
> 
>         [MediaStream] Calculate width or height when constraints contain only the other
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index c9a427397c1ffd3b1433759088f3084c7e825ba3..ad355370286db5e0fe70ebd7431bb6a8b727958b 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,46 @@
>+2018-12-14  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Allow clients to set the navigator platform
>+        https://bugs.webkit.org/show_bug.cgi?id=192735
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Add private API to allow clients to override the default navigator
>+        platform. Some websites check for the platform, which 
>+        interfears with our request desktop site feature. This should
>+        help more sites function as expected.
>+
>+        * Shared/WebsitePoliciesData.cpp:
>+        (WebKit::WebsitePoliciesData::encode const):
>+        (WebKit::WebsitePoliciesData::decode):
>+        (WebKit::WebsitePoliciesData::applyToDocumentLoader):
>+        * Shared/WebsitePoliciesData.h:
>+        * UIProcess/API/APIWebsitePolicies.cpp:
>+        (API::WebsitePolicies::data):
>+        * UIProcess/API/APIWebsitePolicies.h:
>+        * UIProcess/API/Cocoa/_WKWebsitePolicies.h:
>+        * UIProcess/API/Cocoa/_WKWebsitePolicies.mm:
>+        (-[_WKWebsitePolicies setCustomNavigatorPlatform:]):
>+        (-[_WKWebsitePolicies customNavigatorPlatform]):
>+        * UIProcess/Cocoa/NavigationState.mm:
>+        (WebKit::NavigationState::NavigationClient::decidePolicyForNavigationAction):
>+        * WebProcess/InjectedBundle/API/c/WKBundlePageLoaderClient.h:
>+        * WebProcess/Storage/WebSWContextManagerConnection.cpp:
>+        (WebKit::WebSWContextManagerConnection::installServiceWorker):
>+        (WebKit::WebSWContextManagerConnection::setNavigatorPlatform):
>+        * WebProcess/Storage/WebSWContextManagerConnection.h:
>+        * WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
>+        (WebKit::WebFrameLoaderClient::navigatorPlatform):
>+        * WebProcess/WebCoreSupport/WebFrameLoaderClient.h:
>+        * WebProcess/WebPage/WebPage.cpp:
>+        (WebKit::WebPage::navigatorPlatform const):
>+        (WebKit::WebPage::setNavigatorPlatform):
>+        * WebProcess/WebPage/WebPage.h:
>+        * WebProcess/WebPage/ios/WebPageIOS.mm:
>+        (WebKit::WebPage::platformNavigatorPlatform const):
>+        * WebProcess/WebPage/mac/WebPageMac.mm:
>+        (WebKit::WebPage::platformNavigatorPlatform const):
>+
> 2018-12-13  Per Arne Vollan  <pvollan@apple.com>
> 
>         [macOS] Remove with-report from 3 services that are currently needed on macOS
>diff --git a/Source/WebKitLegacy/mac/ChangeLog b/Source/WebKitLegacy/mac/ChangeLog
>index 3570259861438dfaf540882c263c9945b1099ea6..a027dc3330ff1568341465f56af60ab75a00bc24 100644
>--- a/Source/WebKitLegacy/mac/ChangeLog
>+++ b/Source/WebKitLegacy/mac/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-12-14  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Allow clients to set the navigator platform
>+        https://bugs.webkit.org/show_bug.cgi?id=192735
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Add stubs to fill out the added functionality in FrameLoaderClient.
>+
>+        * WebCoreSupport/WebFrameLoaderClient.h:
>+        * WebCoreSupport/WebFrameLoaderClient.mm:
>+        (WebFrameLoaderClient::navigatorPlatform):
>+
> 2018-12-12  Ryosuke Niwa  <rniwa@webkit.org>
> 
>         Make TextInputController.legacyAttributedString take DOM nodes and offsets
>diff --git a/Source/WebCore/dom/Document.cpp b/Source/WebCore/dom/Document.cpp
>index d6be912b123ab17970e88b482146091383aabdda..297b409dc6d0809fe8311c3e8a617a438d51877a 100644
>--- a/Source/WebCore/dom/Document.cpp
>+++ b/Source/WebCore/dom/Document.cpp
>@@ -3286,6 +3286,11 @@ String Document::userAgent(const URL& url) const
> {
>     return frame() ? frame()->loader().userAgent(url) : String();
> }
>+    
>+String Document::navigatorPlatform() const
>+{
>+    return frame() ? frame()->loader().navigatorPlatform() : String();
>+}
> 
> void Document::disableEval(const String& errorMessage)
> {
>diff --git a/Source/WebCore/dom/Document.h b/Source/WebCore/dom/Document.h
>index 4cca3a1d1204582882ad87238187bc24d8e9b952..7b211447d813892e94fb9d1122ef7ba303b7362d 100644
>--- a/Source/WebCore/dom/Document.h
>+++ b/Source/WebCore/dom/Document.h
>@@ -697,6 +697,7 @@ public:
>     WEBCORE_EXPORT PAL::SessionID sessionID() const final;
> 
>     String userAgent(const URL&) const final;
>+    String navigatorPlatform() const final;
> 
>     void disableEval(const String& errorMessage) final;
>     void disableWebAssembly(const String& errorMessage) final;
>diff --git a/Source/WebCore/dom/ScriptExecutionContext.h b/Source/WebCore/dom/ScriptExecutionContext.h
>index 5c58527d38be45a0d108f0a3b3d1b8b7b6caab24..d31119f107c4ab431c44726ff305ebb0c40651cc 100644
>--- a/Source/WebCore/dom/ScriptExecutionContext.h
>+++ b/Source/WebCore/dom/ScriptExecutionContext.h
>@@ -98,6 +98,7 @@ public:
>     virtual PAL::SessionID sessionID() const = 0;
> 
>     virtual String userAgent(const URL&) const = 0;
>+    virtual String navigatorPlatform() const = 0;
> 
>     virtual void disableEval(const String& errorMessage) = 0;
>     virtual void disableWebAssembly(const String& errorMessage) = 0;
>diff --git a/Source/WebCore/loader/DocumentLoader.h b/Source/WebCore/loader/DocumentLoader.h
>index 501a527378f98161166f0a1cbe761425141105e0..7945514d021b2e8012370b1725449ee2fe2205b2 100644
>--- a/Source/WebCore/loader/DocumentLoader.h
>+++ b/Source/WebCore/loader/DocumentLoader.h
>@@ -266,6 +266,9 @@ public:
> 
>     void setCustomUserAgent(const String& customUserAgent) { m_customUserAgent = customUserAgent; }
>     const String& customUserAgent() const { return m_customUserAgent; }
>+        
>+    void setCustomNavigatorPlatform(const String& customNavigatorPlatform) { m_customNavigatorPlatform = customNavigatorPlatform; }
>+    const String& customNavigatorPlatform() const { return m_customNavigatorPlatform; }
> 
>     OptionSet<AutoplayQuirk> allowedAutoplayQuirks() const { return m_allowedAutoplayQuirks; }
>     void setAllowedAutoplayQuirks(OptionSet<AutoplayQuirk> allowedQuirks) { m_allowedAutoplayQuirks = allowedQuirks; }
>@@ -536,6 +539,7 @@ private:
>     HashMap<String, Vector<std::pair<String, uint32_t>>> m_pendingContentExtensionDisplayNoneSelectors;
> #endif
>     String m_customUserAgent;
>+    String m_customNavigatorPlatform;
>     bool m_userContentExtensionsEnabled { true };
>     AutoplayPolicy m_autoplayPolicy { AutoplayPolicy::Default };
>     OptionSet<AutoplayQuirk> m_allowedAutoplayQuirks;
>diff --git a/Source/WebCore/loader/EmptyFrameLoaderClient.h b/Source/WebCore/loader/EmptyFrameLoaderClient.h
>index 4ff8df13ed5516ea8f254e0dbb787b45869291e6..7fc6f7f13530e3be4ecc0962b2be2b78a729fc26 100644
>--- a/Source/WebCore/loader/EmptyFrameLoaderClient.h
>+++ b/Source/WebCore/loader/EmptyFrameLoaderClient.h
>@@ -150,6 +150,7 @@ class WEBCORE_EXPORT EmptyFrameLoaderClient : public FrameLoaderClient {
>     void setTitle(const StringWithDirection&, const URL&) final { }
> 
>     String userAgent(const URL&) override { return emptyString(); }
>+    String navigatorPlatform() override { return emptyString(); }
> 
>     void savePlatformDataToCachedFrame(CachedFrame*) final { }
>     void transitionToCommittedFromCachedFrame(CachedFrame*) final { }
>diff --git a/Source/WebCore/loader/FrameLoader.cpp b/Source/WebCore/loader/FrameLoader.cpp
>index 8336522a610628b84e3dd1794609bcf2ec12fb11..bc7d6c33411643f4971959eafcb618e6515b4bdf 100644
>--- a/Source/WebCore/loader/FrameLoader.cpp
>+++ b/Source/WebCore/loader/FrameLoader.cpp
>@@ -2672,6 +2672,16 @@ String FrameLoader::userAgent(const URL& url) const
> 
>     return m_client.userAgent(url);
> }
>+    
>+String FrameLoader::navigatorPlatform() const
>+{
>+    if (auto* documentLoader = m_frame.mainFrame().loader().activeDocumentLoader()) {
>+        auto& customNavigatorPlatform = documentLoader->customNavigatorPlatform();
>+        if (!customNavigatorPlatform.isEmpty())
>+            return customNavigatorPlatform;
>+    }
>+    return String();
>+}
> 
> void FrameLoader::dispatchOnloadEvents()
> {
>diff --git a/Source/WebCore/loader/FrameLoader.h b/Source/WebCore/loader/FrameLoader.h
>index 2d8295532da1ff34ff5e1ce1316642611a0fc01e..a04aeb46bd9bba0a35ebb02230939cb215ee33ca 100644
>--- a/Source/WebCore/loader/FrameLoader.h
>+++ b/Source/WebCore/loader/FrameLoader.h
>@@ -234,6 +234,7 @@ public:
> 
>     void dispatchOnloadEvents();
>     String userAgent(const URL&) const;
>+    String navigatorPlatform() const;
> 
>     void dispatchDidClearWindowObjectInWorld(DOMWrapperWorld&);
>     void dispatchDidClearWindowObjectsInAllWorlds();
>diff --git a/Source/WebCore/loader/FrameLoaderClient.h b/Source/WebCore/loader/FrameLoaderClient.h
>index 688c6b2528c9d225c6bf8537c0127e67e2e77aba..1363a2bcb0a8a94b21860cbb56539b7164124d3a 100644
>--- a/Source/WebCore/loader/FrameLoaderClient.h
>+++ b/Source/WebCore/loader/FrameLoaderClient.h
>@@ -269,6 +269,7 @@ public:
>     virtual void setTitle(const StringWithDirection&, const URL&) = 0;
> 
>     virtual String userAgent(const URL&) = 0;
>+    virtual String navigatorPlatform() = 0;
> 
>     virtual String overrideContentSecurityPolicy() const { return String(); }
>     
>diff --git a/Source/WebCore/page/Navigator.cpp b/Source/WebCore/page/Navigator.cpp
>index a40fd22670f3f64197aabe7b4c375716b7404804..5f1c338e1510cae2945e2c71ad1d01db62fed08f 100644
>--- a/Source/WebCore/page/Navigator.cpp
>+++ b/Source/WebCore/page/Navigator.cpp
>@@ -46,6 +46,28 @@
> #include <wtf/StdLibExtras.h>
> #include <wtf/WeakPtr.h>
> 
>+#if OS(LINUX)
>+#include "sys/utsname.h"
>+#endif
>+
>+#if PLATFORM(IOS_FAMILY)
>+#include "Device.h"
>+#endif
>+
>+#ifndef WEBCORE_NAVIGATOR_PLATFORM
>+#if PLATFORM(IOS_FAMILY)
>+#define WEBCORE_NAVIGATOR_PLATFORM deviceName()
>+#elif OS(MAC_OS_X) && (CPU(PPC) || CPU(PPC64))
>+#define WEBCORE_NAVIGATOR_PLATFORM "MacPPC"_s
>+#elif OS(MAC_OS_X) && (CPU(X86) || CPU(X86_64))
>+#define WEBCORE_NAVIGATOR_PLATFORM "MacIntel"_s
>+#elif OS(WINDOWS)
>+#define WEBCORE_NAVIGATOR_PLATFORM "Win32"_s
>+#else
>+#define WEBCORE_NAVIGATOR_PLATFORM emptyString()
>+#endif
>+#endif // ifndef WEBCORE_NAVIGATOR_PLATFORM
>+
> namespace WebCore {
> using namespace WTF;
> 
>@@ -95,6 +117,29 @@ const String& Navigator::userAgent() const
>         m_userAgent = frame->loader().userAgent(frame->document()->url());
>     return m_userAgent;
> }
>+    
>+const String& Navigator::platform() const
>+{
>+#if OS(LINUX)
>+    static NeverDestroyed<String> defaultPlatform = WEBCORE_NAVIGATOR_PLATFORM;
>+    if (!defaultPlatform.isEmpty())
>+        return defaultPlatform;
>+    struct utsname osname;
>+    static NeverDestroyed<String> platformName(uname(&osname) >= 0 ? String(osname.sysname) + " "_str + String(osname.machine) : emptyString());
>+    return platformName;
>+#else
>+    auto* frame = this->frame();
>+    if (!frame || !frame->page())
>+        return m_platform;
>+
>+    if (m_platform.isNull())
>+        m_platform = frame->loader().navigatorPlatform();
>+    
>+    if (m_platform.isNull())
>+        m_platform = WEBCORE_NAVIGATOR_PLATFORM;
>+    return m_platform;
>+#endif
>+}
> 
> void Navigator::userAgentChanged()
> {
>diff --git a/Source/WebCore/page/Navigator.h b/Source/WebCore/page/Navigator.h
>index eb3a058b6d26af85d8969697f28db54ec13bc37a..2a42a199f9e995aff449e40236221b2b0755271a 100644
>--- a/Source/WebCore/page/Navigator.h
>+++ b/Source/WebCore/page/Navigator.h
>@@ -42,6 +42,7 @@ public:
>     bool cookieEnabled() const;
>     bool javaEnabled() const;
>     const String& userAgent() const final;
>+    const String& platform() const final;
>     void userAgentChanged();
>     bool onLine() const final;
>     void share(ScriptExecutionContext&, ShareData, Ref<DeferredPromise>&&);
>@@ -58,6 +59,7 @@ private:
>     mutable RefPtr<DOMPluginArray> m_plugins;
>     mutable RefPtr<DOMMimeTypeArray> m_mimeTypes;
>     mutable String m_userAgent;
>+    mutable String m_platform;
> };
> 
> }
>diff --git a/Source/WebCore/page/NavigatorBase.cpp b/Source/WebCore/page/NavigatorBase.cpp
>index 349552c0a6873575b28cd96d622dfe054f09d6ab..b021baa047abe3b8f10c274991a6625259ebf6fd 100644
>--- a/Source/WebCore/page/NavigatorBase.cpp
>+++ b/Source/WebCore/page/NavigatorBase.cpp
>@@ -35,29 +35,6 @@
> #include <wtf/NumberOfCores.h>
> #include <wtf/text/WTFString.h>
> 
>-#if OS(LINUX)
>-#include "sys/utsname.h"
>-#include <wtf/StdLibExtras.h>
>-#endif
>-
>-#if PLATFORM(IOS_FAMILY)
>-#include "Device.h"
>-#endif
>-
>-#ifndef WEBCORE_NAVIGATOR_PLATFORM
>-#if PLATFORM(IOS_FAMILY)
>-#define WEBCORE_NAVIGATOR_PLATFORM deviceName()
>-#elif OS(MAC_OS_X) && (CPU(PPC) || CPU(PPC64))
>-#define WEBCORE_NAVIGATOR_PLATFORM "MacPPC"_s
>-#elif OS(MAC_OS_X) && (CPU(X86) || CPU(X86_64))
>-#define WEBCORE_NAVIGATOR_PLATFORM "MacIntel"_s
>-#elif OS(WINDOWS)
>-#define WEBCORE_NAVIGATOR_PLATFORM "Win32"_s
>-#else
>-#define WEBCORE_NAVIGATOR_PLATFORM emptyString()
>-#endif
>-#endif // ifndef WEBCORE_NAVIGATOR_PLATFORM
>-
> #ifndef WEBCORE_NAVIGATOR_PRODUCT
> #define WEBCORE_NAVIGATOR_PRODUCT "Gecko"_s
> #endif // ifndef WEBCORE_NAVIGATOR_PRODUCT
>@@ -100,19 +77,6 @@ String NavigatorBase::appVersion() const
>     return agent.substring(agent.find('/') + 1);
> }
> 
>-String NavigatorBase::platform()
>-{
>-#if OS(LINUX)
>-    if (!String(WEBCORE_NAVIGATOR_PLATFORM).isEmpty())
>-        return WEBCORE_NAVIGATOR_PLATFORM;
>-    struct utsname osname;
>-    static NeverDestroyed<String> platformName(uname(&osname) >= 0 ? String(osname.sysname) + " "_str + String(osname.machine) : emptyString());
>-    return platformName;
>-#else
>-    return WEBCORE_NAVIGATOR_PLATFORM;
>-#endif
>-}
>-
> String NavigatorBase::appCodeName()
> {
>     return "Mozilla"_s;
>diff --git a/Source/WebCore/page/NavigatorBase.h b/Source/WebCore/page/NavigatorBase.h
>index d42b39353f22bd1c1c98e56f318bb0a733e79d4b..59a1a8eb575b58e88f0b1a201466102371d8a0bd 100644
>--- a/Source/WebCore/page/NavigatorBase.h
>+++ b/Source/WebCore/page/NavigatorBase.h
>@@ -43,7 +43,7 @@ public:
>     static String appName();
>     String appVersion() const;
>     virtual const String& userAgent() const = 0;
>-    static String platform();
>+    virtual const String& platform() const = 0;
> 
>     static String appCodeName();
>     static String product();
>diff --git a/Source/WebCore/page/WorkerNavigator.cpp b/Source/WebCore/page/WorkerNavigator.cpp
>index 55de004b00044dd3dad3452773480cf8ae1ae457..293caa55a70c7db7d34ec77b8f390c8b4a8c353d 100644
>--- a/Source/WebCore/page/WorkerNavigator.cpp
>+++ b/Source/WebCore/page/WorkerNavigator.cpp
>@@ -29,10 +29,11 @@
> 
> namespace WebCore {
> 
>-WorkerNavigator::WorkerNavigator(ScriptExecutionContext& context, const String& userAgent, bool isOnline)
>+WorkerNavigator::WorkerNavigator(ScriptExecutionContext& context, const String& userAgent, bool isOnline, const String& navigatorPlatform)
>     : NavigatorBase(&context)
>     , m_userAgent(userAgent)
>     , m_isOnline(isOnline)
>+    , m_navigatorPlatform(navigatorPlatform)
> {
> }
> 
>@@ -40,6 +41,12 @@ const String& WorkerNavigator::userAgent() const
> {
>     return m_userAgent;
> }
>+    
>+const String& WorkerNavigator::platform() const
>+{
>+    return m_navigatorPlatform;
>+}
>+    
> 
> bool WorkerNavigator::onLine() const
> {
>diff --git a/Source/WebCore/page/WorkerNavigator.h b/Source/WebCore/page/WorkerNavigator.h
>index 45ecf66c7d20c82bd52cf55d1fb94a8c32b4b450..704889345776152abcf0236d3b8d224875c785f7 100644
>--- a/Source/WebCore/page/WorkerNavigator.h
>+++ b/Source/WebCore/page/WorkerNavigator.h
>@@ -33,17 +33,19 @@ namespace WebCore {
> 
> class WorkerNavigator final : public NavigatorBase, public Supplementable<WorkerNavigator> {
> public:
>-    static Ref<WorkerNavigator> create(ScriptExecutionContext& context, const String& userAgent, bool isOnline) { return adoptRef(*new WorkerNavigator(context, userAgent, isOnline)); }
>+    static Ref<WorkerNavigator> create(ScriptExecutionContext& context, const String& userAgent, bool isOnline, const String& navigatorPlatform) { return adoptRef(*new WorkerNavigator(context, userAgent, isOnline, navigatorPlatform)); }
> 
>     const String& userAgent() const final;
>+    const String& platform() const final;
>     bool onLine() const final;
>     void setIsOnline(bool isOnline) { m_isOnline = isOnline; }
> 
> private:
>-    explicit WorkerNavigator(ScriptExecutionContext&, const String&, bool isOnline);
>+    explicit WorkerNavigator(ScriptExecutionContext&, const String&, bool isOnline, const String&);
> 
>     String m_userAgent;
>     bool m_isOnline;
>+    String m_navigatorPlatform;
> };
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/workers/DedicatedWorkerGlobalScope.cpp b/Source/WebCore/workers/DedicatedWorkerGlobalScope.cpp
>index db7d7770c445c8dfa6bf0225cb8094cd001e0b88..5dc852bb33c688475e3109754e7f0e22aa3fc13b 100644
>--- a/Source/WebCore/workers/DedicatedWorkerGlobalScope.cpp
>+++ b/Source/WebCore/workers/DedicatedWorkerGlobalScope.cpp
>@@ -41,16 +41,16 @@
> 
> namespace WebCore {
> 
>-Ref<DedicatedWorkerGlobalScope> DedicatedWorkerGlobalScope::create(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread& thread, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID)
>+Ref<DedicatedWorkerGlobalScope> DedicatedWorkerGlobalScope::create(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread& thread, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID, const String& navigatorPlatform)
> {
>-    auto context = adoptRef(*new DedicatedWorkerGlobalScope(url, WTFMove(origin), name, identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID));
>+    auto context = adoptRef(*new DedicatedWorkerGlobalScope(url, WTFMove(origin), name, identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID, navigatorPlatform));
>     if (!shouldBypassMainWorldContentSecurityPolicy)
>         context->applyContentSecurityPolicyResponseHeaders(contentSecurityPolicyResponseHeaders);
>     return context;
> }
> 
>-DedicatedWorkerGlobalScope::DedicatedWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID)
>-    : WorkerGlobalScope(url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID)
>+DedicatedWorkerGlobalScope::DedicatedWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID, const String& navigatorPlatform)
>+    : WorkerGlobalScope(url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID, navigatorPlatform)
>     , m_name(name)
> {
> }
>diff --git a/Source/WebCore/workers/DedicatedWorkerGlobalScope.h b/Source/WebCore/workers/DedicatedWorkerGlobalScope.h
>index 55a99e57644c5d7848343546be007b8f307c5960..1d10e7ffaed6986173350fa22379cfc42c00baa3 100644
>--- a/Source/WebCore/workers/DedicatedWorkerGlobalScope.h
>+++ b/Source/WebCore/workers/DedicatedWorkerGlobalScope.h
>@@ -48,7 +48,7 @@ class SerializedScriptValue;
> 
> class DedicatedWorkerGlobalScope final : public WorkerGlobalScope {
> public:
>-    static Ref<DedicatedWorkerGlobalScope> create(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread&, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID);
>+    static Ref<DedicatedWorkerGlobalScope> create(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread&, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID, const String& navigatorPlatform);
>     virtual ~DedicatedWorkerGlobalScope();
> 
>     const String& name() const { return m_name; }
>@@ -60,7 +60,7 @@ public:
> private:
>     using Base = WorkerGlobalScope;
> 
>-    DedicatedWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID);
>+    DedicatedWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, DedicatedWorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID, const String& navigatorPlatform);
> 
>     bool isDedicatedWorkerGlobalScope() const final { return true; }
>     ExceptionOr<void> importScripts(const Vector<String>& urls) final;
>diff --git a/Source/WebCore/workers/DedicatedWorkerThread.cpp b/Source/WebCore/workers/DedicatedWorkerThread.cpp
>index 73a3da4baaae4981f7db75b3a1598f8a8d4dbee8..4513ce1f353831537ae3083e3fea3a4fcb5c8c6e 100644
>--- a/Source/WebCore/workers/DedicatedWorkerThread.cpp
>+++ b/Source/WebCore/workers/DedicatedWorkerThread.cpp
>@@ -38,17 +38,17 @@
> 
> namespace WebCore {
> 
>-DedicatedWorkerThread::DedicatedWorkerThread(const URL& url, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy& workerLoaderProxy, WorkerDebuggerProxy& workerDebuggerProxy, WorkerObjectProxy& workerObjectProxy, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID)
>-    : WorkerThread(url, name, identifier, userAgent, isOnline, sourceCode, workerLoaderProxy, workerDebuggerProxy, workerObjectProxy, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, topOrigin, timeOrigin, connectionProxy, socketProvider, runtimeFlags, sessionID)
>+DedicatedWorkerThread::DedicatedWorkerThread(const URL& url, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy& workerLoaderProxy, WorkerDebuggerProxy& workerDebuggerProxy, WorkerObjectProxy& workerObjectProxy, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID, const String& navigatorPlatform)
>+    : WorkerThread(url, name, identifier, userAgent, isOnline, sourceCode, workerLoaderProxy, workerDebuggerProxy, workerObjectProxy, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, topOrigin, timeOrigin, connectionProxy, socketProvider, runtimeFlags, sessionID, navigatorPlatform)
>     , m_workerObjectProxy(workerObjectProxy)
> {
> }
> 
> DedicatedWorkerThread::~DedicatedWorkerThread() = default;
> 
>-Ref<WorkerGlobalScope> DedicatedWorkerThread::createWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID)
>+Ref<WorkerGlobalScope> DedicatedWorkerThread::createWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID, const String& navigatorPlatform)
> {
>-    return DedicatedWorkerGlobalScope::create(url, WTFMove(origin), name, identifier, userAgent, isOnline, *this, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, idbConnectionProxy(), socketProvider(), sessionID);
>+    return DedicatedWorkerGlobalScope::create(url, WTFMove(origin), name, identifier, userAgent, isOnline, *this, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, idbConnectionProxy(), socketProvider(), sessionID, navigatorPlatform);
> }
> 
> void DedicatedWorkerThread::runEventLoop()
>diff --git a/Source/WebCore/workers/DedicatedWorkerThread.h b/Source/WebCore/workers/DedicatedWorkerThread.h
>index f1c9624b18ac1893298846339616352cac0c7dd7..6001cb3984aef0beddd548ac934d7a7e1c7bb167 100644
>--- a/Source/WebCore/workers/DedicatedWorkerThread.h
>+++ b/Source/WebCore/workers/DedicatedWorkerThread.h
>@@ -49,11 +49,11 @@ public:
>     WorkerObjectProxy& workerObjectProxy() const { return m_workerObjectProxy; }
> 
> protected:
>-    Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID) override;
>+    Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID, const String& navigatorPlatform) override;
>     void runEventLoop() override;
> 
> private:
>-    DedicatedWorkerThread(const URL&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy&, WorkerDebuggerProxy&, WorkerObjectProxy&, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, JSC::RuntimeFlags, PAL::SessionID);
>+    DedicatedWorkerThread(const URL&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy&, WorkerDebuggerProxy&, WorkerObjectProxy&, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, JSC::RuntimeFlags, PAL::SessionID, const String& navigatorPlatform);
> 
>     WorkerObjectProxy& m_workerObjectProxy;
> };
>diff --git a/Source/WebCore/workers/Worker.cpp b/Source/WebCore/workers/Worker.cpp
>index 49474c7042d3f0f9a4ba6fe366a30a383840bd80..6fa2c88dfd0ee6c4eafd1e25ecf80ad70a86598a 100644
>--- a/Source/WebCore/workers/Worker.cpp
>+++ b/Source/WebCore/workers/Worker.cpp
>@@ -186,7 +186,7 @@ void Worker::notifyFinished()
>     else {
>         bool isOnline = platformStrategies()->loaderStrategy()->isOnLine();
>         const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders = m_contentSecurityPolicyResponseHeaders ? m_contentSecurityPolicyResponseHeaders.value() : scriptExecutionContext()->contentSecurityPolicy()->responseHeaders();
>-        m_contextProxy.startWorkerGlobalScope(m_scriptLoader->url(), m_name, scriptExecutionContext()->userAgent(m_scriptLoader->url()), isOnline, m_scriptLoader->script(), contentSecurityPolicyResponseHeaders, m_shouldBypassMainWorldContentSecurityPolicy, m_workerCreationTime, m_runtimeFlags, sessionID);
>+        m_contextProxy.startWorkerGlobalScope(m_scriptLoader->url(), m_name, scriptExecutionContext()->userAgent(m_scriptLoader->url()), isOnline, m_scriptLoader->script(), contentSecurityPolicyResponseHeaders, m_shouldBypassMainWorldContentSecurityPolicy, m_workerCreationTime, m_runtimeFlags, sessionID, scriptExecutionContext()->navigatorPlatform());
>         InspectorInstrumentation::scriptImported(*scriptExecutionContext(), m_scriptLoader->identifier(), m_scriptLoader->script());
>     }
>     m_scriptLoader = nullptr;
>diff --git a/Source/WebCore/workers/WorkerGlobalScope.cpp b/Source/WebCore/workers/WorkerGlobalScope.cpp
>index 0e2a5091255c6d67ec88a2f657d439edb4d2b3e0..99d8cffbbfad23a70a9fc87b985fd1eceb0d818d 100644
>--- a/Source/WebCore/workers/WorkerGlobalScope.cpp
>+++ b/Source/WebCore/workers/WorkerGlobalScope.cpp
>@@ -54,7 +54,7 @@
> namespace WebCore {
> using namespace Inspector;
> 
>-WorkerGlobalScope::WorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, WorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID)
>+WorkerGlobalScope::WorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, WorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID, const String& navigatorPlatform)
>     : m_url(url)
>     , m_identifier(identifier)
>     , m_userAgent(userAgent)
>@@ -72,6 +72,7 @@ WorkerGlobalScope::WorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origi
>     , m_socketProvider(socketProvider)
>     , m_performance(Performance::create(this, timeOrigin))
>     , m_sessionID(sessionID)
>+    , m_navigatorPlatform(navigatorPlatform)
> {
> #if !ENABLE(INDEXED_DATABASE)
>     UNUSED_PARAM(connectionProxy);
>@@ -155,6 +156,11 @@ String WorkerGlobalScope::userAgent(const URL&) const
> {
>     return m_userAgent;
> }
>+    
>+String WorkerGlobalScope::navigatorPlatform() const
>+{
>+    return m_navigatorPlatform;
>+}
> 
> void WorkerGlobalScope::disableEval(const String& errorMessage)
> {
>@@ -219,7 +225,7 @@ void WorkerGlobalScope::close()
> WorkerNavigator& WorkerGlobalScope::navigator()
> {
>     if (!m_navigator)
>-        m_navigator = WorkerNavigator::create(*this, m_userAgent, m_isOnline);
>+        m_navigator = WorkerNavigator::create(*this, m_userAgent, m_isOnline, m_navigatorPlatform); 
>     return *m_navigator;
> }
> 
>diff --git a/Source/WebCore/workers/WorkerGlobalScope.h b/Source/WebCore/workers/WorkerGlobalScope.h
>index 8395629d0799591d6b0816d985f51e10bea659e8..837285b83b9eea098aea6fbd8e9f5ec99a2bc504 100644
>--- a/Source/WebCore/workers/WorkerGlobalScope.h
>+++ b/Source/WebCore/workers/WorkerGlobalScope.h
>@@ -126,7 +126,7 @@ public:
>     unsigned long createUniqueIdentifier() { return m_uniqueIdentifier++; }
> 
> protected:
>-    WorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, WorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID);
>+    WorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, WorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID, const String& navigatorPlatform);
> 
>     void applyContentSecurityPolicyResponseHeaders(const ContentSecurityPolicyResponseHeaders&);
> 
>@@ -150,6 +150,7 @@ private:
>     URL completeURL(const String&) const final;
>     PAL::SessionID sessionID() const final { return m_sessionID; }
>     String userAgent(const URL&) const final;
>+    String navigatorPlatform() const final;
>     void disableEval(const String& errorMessage) final;
>     void disableWebAssembly(const String& errorMessage) final;
>     EventTarget* errorEventTarget() final;
>@@ -207,6 +208,9 @@ private:
>     mutable RefPtr<Crypto> m_crypto;
> 
>     PAL::SessionID m_sessionID;
>+    
>+    String m_navigatorPlatform;
>+    
>     RefPtr<WorkerCacheStorageConnection> m_cacheStorageConnection;
> 
>     unsigned long m_uniqueIdentifier { 1 };
>diff --git a/Source/WebCore/workers/WorkerGlobalScopeProxy.h b/Source/WebCore/workers/WorkerGlobalScopeProxy.h
>index 8585a5bff93b04665de5321ed32b92ffa976a171..c2c009e044a8fc6413dfb28519756c5567ca0158 100644
>--- a/Source/WebCore/workers/WorkerGlobalScopeProxy.h
>+++ b/Source/WebCore/workers/WorkerGlobalScopeProxy.h
>@@ -49,7 +49,7 @@ class WorkerGlobalScopeProxy {
> public:
>     static WorkerGlobalScopeProxy& create(Worker&);
> 
>-    virtual void startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags, PAL::SessionID) = 0;
>+    virtual void startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags, PAL::SessionID, const String& navigatorPlatform) = 0;
>     virtual void terminateWorkerGlobalScope() = 0;
>     virtual void postMessageToWorkerGlobalScope(MessageWithMessagePorts&&) = 0;
>     virtual bool hasPendingActivity() const = 0;
>diff --git a/Source/WebCore/workers/WorkerMessagingProxy.cpp b/Source/WebCore/workers/WorkerMessagingProxy.cpp
>index a75c0156c59e38dd999d6cec1ddeede23be187b3..893a808285b688a89629e64c696c7e579d99ba70 100644
>--- a/Source/WebCore/workers/WorkerMessagingProxy.cpp
>+++ b/Source/WebCore/workers/WorkerMessagingProxy.cpp
>@@ -72,7 +72,7 @@ WorkerMessagingProxy::~WorkerMessagingProxy()
>         || (is<WorkerGlobalScope>(*m_scriptExecutionContext) && downcast<WorkerGlobalScope>(*m_scriptExecutionContext).thread().thread() == &Thread::current()));
> }
> 
>-void WorkerMessagingProxy::startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID)
>+void WorkerMessagingProxy::startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID, const String& navigatorPlatform)
> {
>     // FIXME: This need to be revisited when we support nested worker one day
>     ASSERT(m_scriptExecutionContext);
>@@ -88,7 +88,7 @@ void WorkerMessagingProxy::startWorkerGlobalScope(const URL& scriptURL, const St
> 
>     SocketProvider* socketProvider = document.socketProvider();
> 
>-    auto thread = DedicatedWorkerThread::create(scriptURL, name, identifier, userAgent, isOnline, sourceCode, *this, *this, *this, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, document.topOrigin(), timeOrigin, proxy, socketProvider, runtimeFlags, sessionID);
>+    auto thread = DedicatedWorkerThread::create(scriptURL, name, identifier, userAgent, isOnline, sourceCode, *this, *this, *this, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, document.topOrigin(), timeOrigin, proxy, socketProvider, runtimeFlags, sessionID, navigatorPlatform);
> 
>     workerThreadCreated(thread.get());
>     thread->start(nullptr);
>diff --git a/Source/WebCore/workers/WorkerMessagingProxy.h b/Source/WebCore/workers/WorkerMessagingProxy.h
>index ecedb483956c121bf86d05f22baba43814bcd306..fdef2fa52730a71f73d78e7930c6fb68145d0e63 100644
>--- a/Source/WebCore/workers/WorkerMessagingProxy.h
>+++ b/Source/WebCore/workers/WorkerMessagingProxy.h
>@@ -46,7 +46,7 @@ public:
> private:
>     // Implementations of WorkerGlobalScopeProxy.
>     // (Only use these functions in the worker object thread.)
>-    void startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags, PAL::SessionID) final;
>+    void startWorkerGlobalScope(const URL& scriptURL, const String& name, const String& userAgent, bool isOnline, const String& sourceCode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, MonotonicTime timeOrigin, JSC::RuntimeFlags, PAL::SessionID, const String& navigatorPlatform) final;
>     void terminateWorkerGlobalScope() final;
>     void postMessageToWorkerGlobalScope(MessageWithMessagePorts&&) final;
>     bool hasPendingActivity() const final;
>diff --git a/Source/WebCore/workers/WorkerThread.cpp b/Source/WebCore/workers/WorkerThread.cpp
>index 9795543e1bfe588049f36c1f95712a1f02c36bc5..fa4f794ef01bc3f418c5ee7e85f87d125531c930 100644
>--- a/Source/WebCore/workers/WorkerThread.cpp
>+++ b/Source/WebCore/workers/WorkerThread.cpp
>@@ -72,7 +72,7 @@ unsigned WorkerThread::workerThreadCount()
> struct WorkerThreadStartupData {
>     WTF_MAKE_NONCOPYABLE(WorkerThreadStartupData); WTF_MAKE_FAST_ALLOCATED;
> public:
>-    WorkerThreadStartupData(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, PAL::SessionID);
>+    WorkerThreadStartupData(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, PAL::SessionID, const String& navigatorPlatform);
> 
>     URL m_scriptURL;
>     Ref<SecurityOrigin> m_origin;
>@@ -87,9 +87,10 @@ public:
>     Ref<SecurityOrigin> m_topOrigin;
>     MonotonicTime m_timeOrigin;
>     PAL::SessionID m_sessionID;
>+    String m_navigatorPlatform;
> };
> 
>-WorkerThreadStartupData::WorkerThreadStartupData(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID)
>+WorkerThreadStartupData::WorkerThreadStartupData(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID, const String& navigatorPlatform)
>     : m_scriptURL(scriptURL.isolatedCopy())
>     , m_origin(SecurityOrigin::create(m_scriptURL)->isolatedCopy())
>     , m_name(name.isolatedCopy())
>@@ -103,15 +104,16 @@ WorkerThreadStartupData::WorkerThreadStartupData(const URL& scriptURL, const Str
>     , m_topOrigin(topOrigin.isolatedCopy())
>     , m_timeOrigin(timeOrigin)
>     , m_sessionID(sessionID.isolatedCopy())
>+    , m_navigatorPlatform(navigatorPlatform.isolatedCopy())
> {
> }
> 
>-WorkerThread::WorkerThread(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy& workerLoaderProxy, WorkerDebuggerProxy& workerDebuggerProxy, WorkerReportingProxy& workerReportingProxy, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID)
>+WorkerThread::WorkerThread(const URL& scriptURL, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy& workerLoaderProxy, WorkerDebuggerProxy& workerDebuggerProxy, WorkerReportingProxy& workerReportingProxy, WorkerThreadStartMode startMode, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicyResponseHeaders, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, JSC::RuntimeFlags runtimeFlags, PAL::SessionID sessionID, const String& navigatorPlatform)
>     : m_workerLoaderProxy(workerLoaderProxy)
>     , m_workerDebuggerProxy(workerDebuggerProxy)
>     , m_workerReportingProxy(workerReportingProxy)
>     , m_runtimeFlags(runtimeFlags)
>-    , m_startupData(std::make_unique<WorkerThreadStartupData>(scriptURL, name, identifier, userAgent, isOnline, sourceCode, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, topOrigin, timeOrigin, sessionID))
>+    , m_startupData(std::make_unique<WorkerThreadStartupData>(scriptURL, name, identifier, userAgent, isOnline, sourceCode, startMode, contentSecurityPolicyResponseHeaders, shouldBypassMainWorldContentSecurityPolicy, topOrigin, timeOrigin, sessionID, navigatorPlatform))
> #if ENABLE(INDEXED_DATABASE)
>     , m_idbConnectionProxy(connectionProxy)
> #endif
>@@ -169,7 +171,7 @@ void WorkerThread::workerThread()
>         // while WorkerThread::stop() is accessing it. Note that WorkerThread::stop() can
>         // be called before we've finished creating the WorkerGlobalScope.
>         LockHolder lock(m_threadCreationAndWorkerGlobalScopeMutex);
>-        m_workerGlobalScope = createWorkerGlobalScope(m_startupData->m_scriptURL, WTFMove(m_startupData->m_origin), m_startupData->m_name, m_startupData->m_identifier, m_startupData->m_userAgent, m_startupData->m_isOnline, m_startupData->m_contentSecurityPolicyResponseHeaders, m_startupData->m_shouldBypassMainWorldContentSecurityPolicy, WTFMove(m_startupData->m_topOrigin), m_startupData->m_timeOrigin, m_startupData->m_sessionID);
>+        m_workerGlobalScope = createWorkerGlobalScope(m_startupData->m_scriptURL, WTFMove(m_startupData->m_origin), m_startupData->m_name, m_startupData->m_identifier, m_startupData->m_userAgent, m_startupData->m_isOnline, m_startupData->m_contentSecurityPolicyResponseHeaders, m_startupData->m_shouldBypassMainWorldContentSecurityPolicy, WTFMove(m_startupData->m_topOrigin), m_startupData->m_timeOrigin, m_startupData->m_sessionID, m_startupData->m_navigatorPlatform);
> 
>         scriptController = m_workerGlobalScope->script();
> 
>diff --git a/Source/WebCore/workers/WorkerThread.h b/Source/WebCore/workers/WorkerThread.h
>index 3dc54f6c473db3767525d1ca4103d5d6a56c968d..77576e78a69235add8a2ca57e61321e4bf4b18c6 100644
>--- a/Source/WebCore/workers/WorkerThread.h
>+++ b/Source/WebCore/workers/WorkerThread.h
>@@ -86,10 +86,10 @@ public:
>     JSC::RuntimeFlags runtimeFlags() const { return m_runtimeFlags; }
> 
> protected:
>-    WorkerThread(const URL&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy&, WorkerDebuggerProxy&, WorkerReportingProxy&, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, JSC::RuntimeFlags, PAL::SessionID);
>+    WorkerThread(const URL&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const String& sourceCode, WorkerLoaderProxy&, WorkerDebuggerProxy&, WorkerReportingProxy&, WorkerThreadStartMode, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, const SecurityOrigin& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, JSC::RuntimeFlags, PAL::SessionID, const String& navigatorPlatform);
> 
>     // Factory method for creating a new worker context for the thread.
>-    virtual Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID) = 0;
>+    virtual Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID, const String& navigatorPlatform) = 0;
> 
>     // Executes the event loop for the worker thread. Derived classes can override to perform actions before/after entering the event loop.
>     virtual void runEventLoop();
>diff --git a/Source/WebCore/workers/service/ServiceWorkerGlobalScope.cpp b/Source/WebCore/workers/service/ServiceWorkerGlobalScope.cpp
>index fe429abb92e41ff4ec253301bf5f4bd34ac84bb4..7cee77920b8f5c8a91bae8496abc55c7e34da414 100644
>--- a/Source/WebCore/workers/service/ServiceWorkerGlobalScope.cpp
>+++ b/Source/WebCore/workers/service/ServiceWorkerGlobalScope.cpp
>@@ -38,15 +38,15 @@
> 
> namespace WebCore {
> 
>-Ref<ServiceWorkerGlobalScope> ServiceWorkerGlobalScope::create(const ServiceWorkerContextData& data, const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread& thread, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicy, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID)
>+Ref<ServiceWorkerGlobalScope> ServiceWorkerGlobalScope::create(const ServiceWorkerContextData& data, const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread& thread, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicy, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID, const String& navigatorPlatform)
> {
>-    auto scope = adoptRef(*new ServiceWorkerGlobalScope { data, url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID });
>+    auto scope = adoptRef(*new ServiceWorkerGlobalScope { data, url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID, navigatorPlatform });
>     scope->applyContentSecurityPolicyResponseHeaders(contentSecurityPolicy);
>     return scope;
> }
> 
>-ServiceWorkerGlobalScope::ServiceWorkerGlobalScope(const ServiceWorkerContextData& data, const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID)
>-    : WorkerGlobalScope(url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID)
>+ServiceWorkerGlobalScope::ServiceWorkerGlobalScope(const ServiceWorkerContextData& data, const URL& url, Ref<SecurityOrigin>&& origin, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread& thread, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy* connectionProxy, SocketProvider* socketProvider, PAL::SessionID sessionID, const String& navigatorPlatform)
>+    : WorkerGlobalScope(url, WTFMove(origin), identifier, userAgent, isOnline, thread, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, connectionProxy, socketProvider, sessionID, navigatorPlatform)
>     , m_contextData(crossThreadCopy(data))
>     , m_registration(ServiceWorkerRegistration::getOrCreate(*this, navigator().serviceWorker(), WTFMove(m_contextData.registration)))
>     , m_clients(ServiceWorkerClients::create())
>diff --git a/Source/WebCore/workers/service/ServiceWorkerGlobalScope.h b/Source/WebCore/workers/service/ServiceWorkerGlobalScope.h
>index 0b7f78c7a88ab2bdb7901be25bfcda4eedce8c5b..5f7a8d2c140f8ed2da4b4e572bb8eb7f2012ae96 100644
>--- a/Source/WebCore/workers/service/ServiceWorkerGlobalScope.h
>+++ b/Source/WebCore/workers/service/ServiceWorkerGlobalScope.h
>@@ -43,7 +43,7 @@ class ServiceWorkerThread;
> 
> class ServiceWorkerGlobalScope final : public WorkerGlobalScope {
> public:
>-    static Ref<ServiceWorkerGlobalScope> create(const ServiceWorkerContextData&, const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread&, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID);
>+    static Ref<ServiceWorkerGlobalScope> create(const ServiceWorkerContextData&, const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread&, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID, const String& navigatorPlatform);
> 
>     ~ServiceWorkerGlobalScope();
> 
>@@ -68,7 +68,7 @@ public:
>     void setScriptResource(const URL&, ServiceWorkerContextData::ImportedScript&&);
> 
> private:
>-    ServiceWorkerGlobalScope(const ServiceWorkerContextData&, const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID);
>+    ServiceWorkerGlobalScope(const ServiceWorkerContextData&, const URL&, Ref<SecurityOrigin>&&, const String& identifier, const String& userAgent, bool isOnline, ServiceWorkerThread&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, IDBClient::IDBConnectionProxy*, SocketProvider*, PAL::SessionID, const String& navigatorPlatform);
> 
>     bool hasPendingEvents() const { return !m_extendedEvents.isEmpty(); }
> 
>diff --git a/Source/WebCore/workers/service/context/ServiceWorkerThread.cpp b/Source/WebCore/workers/service/context/ServiceWorkerThread.cpp
>index 51760aa79678d2b7ba6f771c622206be03f5de6d..3f8341fe3028be8436d513eb68b8bf5878c32746 100644
>--- a/Source/WebCore/workers/service/context/ServiceWorkerThread.cpp
>+++ b/Source/WebCore/workers/service/context/ServiceWorkerThread.cpp
>@@ -71,8 +71,8 @@ private:
> // FIXME: Use a valid WorkerObjectProxy
> // FIXME: Use valid runtime flags
> 
>-ServiceWorkerThread::ServiceWorkerThread(const ServiceWorkerContextData& data, PAL::SessionID, String&& userAgent, WorkerLoaderProxy& loaderProxy, WorkerDebuggerProxy& debuggerProxy, IDBClient::IDBConnectionProxy* idbConnectionProxy, SocketProvider* socketProvider)
>-    : WorkerThread(data.scriptURL, emptyString(), "serviceworker:" + Inspector::IdentifiersFactory::createIdentifier(), WTFMove(userAgent), platformStrategies()->loaderStrategy()->isOnLine(), data.script, loaderProxy, debuggerProxy, DummyServiceWorkerThreadProxy::shared(), WorkerThreadStartMode::Normal, data.contentSecurityPolicy, false, data.registration.key.topOrigin().securityOrigin().get(), MonotonicTime::now(), idbConnectionProxy, socketProvider, JSC::RuntimeFlags::createAllEnabled(), data.sessionID)
>+ServiceWorkerThread::ServiceWorkerThread(const ServiceWorkerContextData& data, PAL::SessionID, String&& userAgent, WorkerLoaderProxy& loaderProxy, WorkerDebuggerProxy& debuggerProxy, IDBClient::IDBConnectionProxy* idbConnectionProxy, SocketProvider* socketProvider, String&& navigatorPlatform)
>+    : WorkerThread(data.scriptURL, emptyString(), "serviceworker:" + Inspector::IdentifiersFactory::createIdentifier(), WTFMove(userAgent), platformStrategies()->loaderStrategy()->isOnLine(), data.script, loaderProxy, debuggerProxy, DummyServiceWorkerThreadProxy::shared(), WorkerThreadStartMode::Normal, data.contentSecurityPolicy, false, data.registration.key.topOrigin().securityOrigin().get(), MonotonicTime::now(), idbConnectionProxy, socketProvider, JSC::RuntimeFlags::createAllEnabled(), data.sessionID,  navigatorPlatform)
>     , m_data(data.isolatedCopy())
>     , m_workerObjectProxy(DummyServiceWorkerThreadProxy::shared())
> {
>@@ -81,10 +81,10 @@ ServiceWorkerThread::ServiceWorkerThread(const ServiceWorkerContextData& data, P
> 
> ServiceWorkerThread::~ServiceWorkerThread() = default;
> 
>-Ref<WorkerGlobalScope> ServiceWorkerThread::createWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicy, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID)
>+Ref<WorkerGlobalScope> ServiceWorkerThread::createWorkerGlobalScope(const URL& url, Ref<SecurityOrigin>&& origin, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders& contentSecurityPolicy, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID sessionID, const String& navigatorPlatform)
> {
>     UNUSED_PARAM(name);
>-    return ServiceWorkerGlobalScope::create(m_data, url, WTFMove(origin), identifier, userAgent, isOnline, *this, contentSecurityPolicy, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, idbConnectionProxy(), socketProvider(), sessionID);
>+    return ServiceWorkerGlobalScope::create(m_data, url, WTFMove(origin), identifier, userAgent, isOnline, *this, contentSecurityPolicy, shouldBypassMainWorldContentSecurityPolicy, WTFMove(topOrigin), timeOrigin, idbConnectionProxy(), socketProvider(), sessionID, navigatorPlatform);
> }
> 
> void ServiceWorkerThread::runEventLoop()
>diff --git a/Source/WebCore/workers/service/context/ServiceWorkerThread.h b/Source/WebCore/workers/service/context/ServiceWorkerThread.h
>index 3492a39fe0bfbc00ef6c48a7e1cf6260ad324e92..d11ac31fc3d30fe5a0225111d10b26a8a01ea046 100644
>--- a/Source/WebCore/workers/service/context/ServiceWorkerThread.h
>+++ b/Source/WebCore/workers/service/context/ServiceWorkerThread.h
>@@ -66,11 +66,11 @@ public:
>     ServiceWorkerIdentifier identifier() const { return m_data.serviceWorkerIdentifier; }
> 
> protected:
>-    Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID) final;
>+    Ref<WorkerGlobalScope> createWorkerGlobalScope(const URL&, Ref<SecurityOrigin>&&, const String& name, const String& identifier, const String& userAgent, bool isOnline, const ContentSecurityPolicyResponseHeaders&, bool shouldBypassMainWorldContentSecurityPolicy, Ref<SecurityOrigin>&& topOrigin, MonotonicTime timeOrigin, PAL::SessionID, const String& navigatorPlatform) final;
>     void runEventLoop() override;
> 
> private:
>-    WEBCORE_EXPORT ServiceWorkerThread(const ServiceWorkerContextData&, PAL::SessionID, String&& userAgent, WorkerLoaderProxy&, WorkerDebuggerProxy&, IDBClient::IDBConnectionProxy*, SocketProvider*);
>+    WEBCORE_EXPORT ServiceWorkerThread(const ServiceWorkerContextData&, PAL::SessionID, String&& userAgent, WorkerLoaderProxy&, WorkerDebuggerProxy&, IDBClient::IDBConnectionProxy*, SocketProvider*, String&& navigatorPlatform);
> 
>     bool isServiceWorkerThread() const final { return true; }
> 
>diff --git a/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.cpp b/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.cpp
>index 72da981eb91d0527f6e6bc1dac0a012f0d3ac70e..d733ceba4f13facd02ab3396eccf8d8fa5b81f3d 100644
>--- a/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.cpp
>+++ b/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.cpp
>@@ -88,10 +88,10 @@ static HashSet<ServiceWorkerThreadProxy*>& allServiceWorkerThreadProxies()
>     return set;
> }
> 
>-ServiceWorkerThreadProxy::ServiceWorkerThreadProxy(PageConfiguration&& pageConfiguration, const ServiceWorkerContextData& data, PAL::SessionID sessionID, String&& userAgent, CacheStorageProvider& cacheStorageProvider, SecurityOrigin::StorageBlockingPolicy storageBlockingPolicy)
>+ServiceWorkerThreadProxy::ServiceWorkerThreadProxy(PageConfiguration&& pageConfiguration, const ServiceWorkerContextData& data, PAL::SessionID sessionID, String&& userAgent, CacheStorageProvider& cacheStorageProvider, SecurityOrigin::StorageBlockingPolicy storageBlockingPolicy, String&& navigatorPlatform)
>     : m_page(createPageForServiceWorker(WTFMove(pageConfiguration), data, storageBlockingPolicy, data.sessionID))
>     , m_document(*m_page->mainFrame().document())
>-    , m_serviceWorkerThread(ServiceWorkerThread::create(data, sessionID, WTFMove(userAgent), *this, *this, idbConnectionProxy(m_document), m_document->socketProvider()))
>+    , m_serviceWorkerThread(ServiceWorkerThread::create(data, sessionID, WTFMove(userAgent), *this, *this, idbConnectionProxy(m_document), m_document->socketProvider(), WTFMove(navigatorPlatform)))
>     , m_cacheStorageProvider(cacheStorageProvider)
>     , m_sessionID(sessionID)
>     , m_inspectorProxy(*this)
>diff --git a/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.h b/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.h
>index 49628299c845175faca66ff404e33d8e86bb3d46..25e58fbe5662402fb704b03b6f75861ce84785f8 100644
>--- a/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.h
>+++ b/Source/WebCore/workers/service/context/ServiceWorkerThreadProxy.h
>@@ -76,7 +76,7 @@ public:
>     WEBCORE_EXPORT void removeFetch(SWServerConnectionIdentifier, FetchIdentifier);
> 
> private:
>-    WEBCORE_EXPORT ServiceWorkerThreadProxy(PageConfiguration&&, const ServiceWorkerContextData&, PAL::SessionID, String&& userAgent, CacheStorageProvider&, SecurityOrigin::StorageBlockingPolicy);
>+    WEBCORE_EXPORT ServiceWorkerThreadProxy(PageConfiguration&&, const ServiceWorkerContextData&, PAL::SessionID, String&& userAgent, CacheStorageProvider&, SecurityOrigin::StorageBlockingPolicy, String&& navigatorPlatform);
> 
>     WEBCORE_EXPORT static void networkStateChanged(bool isOnLine);
> 
>diff --git a/Source/WebCore/worklets/WorkletGlobalScope.cpp b/Source/WebCore/worklets/WorkletGlobalScope.cpp
>index 7234031570fe305e8e934c75a57d66d487e28853..7a38173d1bee3b20e4be40e72ab277561c71704b 100644
>--- a/Source/WebCore/worklets/WorkletGlobalScope.cpp
>+++ b/Source/WebCore/worklets/WorkletGlobalScope.cpp
>@@ -100,6 +100,13 @@ String WorkletGlobalScope::userAgent(const URL& url) const
>         return "";
>     return m_document->userAgent(url);
> }
>+    
>+String WorkletGlobalScope::navigatorPlatform() const
>+{
>+    if (!m_document)
>+        return "";
>+    return m_document->navigatorPlatform();
>+}
> 
> void WorkletGlobalScope::evaluate()
> {
>diff --git a/Source/WebCore/worklets/WorkletGlobalScope.h b/Source/WebCore/worklets/WorkletGlobalScope.h
>index 7bb8e0f0ebea15b4335540a951ef2f840e00aa15..bec3d03c0ef7141764fd50b7b2d2ac39c60358e2 100644
>--- a/Source/WebCore/worklets/WorkletGlobalScope.h
>+++ b/Source/WebCore/worklets/WorkletGlobalScope.h
>@@ -121,6 +121,7 @@ private:
>     URL completeURL(const String&) const final;
>     PAL::SessionID sessionID() const final { return m_sessionID; }
>     String userAgent(const URL&) const final;
>+    String navigatorPlatform() const final;
>     void disableEval(const String&) final;
>     void disableWebAssembly(const String&) final;
> 
>diff --git a/Source/WebKit/Shared/WebsitePoliciesData.cpp b/Source/WebKit/Shared/WebsitePoliciesData.cpp
>index df6d3ae2c187da405b548d6774a85d295edada1e..aab10e85e127765263beb9ac601ea22ff724b19b 100644
>--- a/Source/WebKit/Shared/WebsitePoliciesData.cpp
>+++ b/Source/WebKit/Shared/WebsitePoliciesData.cpp
>@@ -43,6 +43,7 @@ void WebsitePoliciesData::encode(IPC::Encoder& encoder) const
>     encoder << popUpPolicy;
>     encoder << websiteDataStoreParameters;
>     encoder << customUserAgent;
>+    encoder << customNavigatorPlatform;
> }
> 
> std::optional<WebsitePoliciesData> WebsitePoliciesData::decode(IPC::Decoder& decoder)
>@@ -81,6 +82,11 @@ std::optional<WebsitePoliciesData> WebsitePoliciesData::decode(IPC::Decoder& dec
>     decoder >> customUserAgent;
>     if (!customUserAgent)
>         return std::nullopt;
>+
>+    std::optional<String> customNavigatorPlatform;
>+    decoder >> customNavigatorPlatform;
>+    if (!customNavigatorPlatform)
>+        return std::nullopt;
>     
>     return { {
>         WTFMove(*contentBlockersEnabled),
>@@ -90,6 +96,7 @@ std::optional<WebsitePoliciesData> WebsitePoliciesData::decode(IPC::Decoder& dec
>         WTFMove(*popUpPolicy),
>         WTFMove(*websiteDataStoreParameters),
>         WTFMove(*customUserAgent),
>+        WTFMove(*customNavigatorPlatform),
>     } };
> }
> 
>@@ -97,6 +104,7 @@ void WebsitePoliciesData::applyToDocumentLoader(WebsitePoliciesData&& websitePol
> {
>     documentLoader.setCustomHeaderFields(WTFMove(websitePolicies.customHeaderFields));
>     documentLoader.setCustomUserAgent(websitePolicies.customUserAgent);
>+    documentLoader.setCustomNavigatorPlatform(websitePolicies.customNavigatorPlatform);
>     
>     // Only setUserContentExtensionsEnabled if it hasn't already been disabled by reloading without content blockers.
>     if (documentLoader.userContentExtensionsEnabled())
>diff --git a/Source/WebKit/Shared/WebsitePoliciesData.h b/Source/WebKit/Shared/WebsitePoliciesData.h
>index 7944c466ec60e1637a5a93428a17fa6da64d2427..d05eb43f0f65b882fa88a1cc45dbf0f1d31bec6f 100644
>--- a/Source/WebKit/Shared/WebsitePoliciesData.h
>+++ b/Source/WebKit/Shared/WebsitePoliciesData.h
>@@ -53,6 +53,7 @@ struct WebsitePoliciesData {
>     WebsitePopUpPolicy popUpPolicy { WebsitePopUpPolicy::Default };
>     std::optional<WebsiteDataStoreParameters> websiteDataStoreParameters;
>     String customUserAgent;
>+    String customNavigatorPlatform;
>     
>     void encode(IPC::Encoder&) const;
>     static std::optional<WebsitePoliciesData> decode(IPC::Decoder&);
>diff --git a/Source/WebKit/UIProcess/API/APIWebsitePolicies.cpp b/Source/WebKit/UIProcess/API/APIWebsitePolicies.cpp
>index f4414425a9d4abfacbba3876fe7c4c29cc45100c..e70a5f062bcd48e571e336d494dcc5958c123331 100644
>--- a/Source/WebKit/UIProcess/API/APIWebsitePolicies.cpp
>+++ b/Source/WebKit/UIProcess/API/APIWebsitePolicies.cpp
>@@ -56,7 +56,7 @@ WebKit::WebsitePoliciesData WebsitePolicies::data()
>     std::optional<WebKit::WebsiteDataStoreParameters> parameters;
>     if (m_websiteDataStore)
>         parameters = m_websiteDataStore->websiteDataStore().parameters();
>-    return { contentBlockersEnabled(), allowedAutoplayQuirks(), autoplayPolicy(), customHeaderFields(), popUpPolicy(), WTFMove(parameters), m_customUserAgent };
>+    return { contentBlockersEnabled(), allowedAutoplayQuirks(), autoplayPolicy(), customHeaderFields(), popUpPolicy(), WTFMove(parameters), m_customUserAgent, m_customNavigatorPlatform };
> }
> 
> }
>diff --git a/Source/WebKit/UIProcess/API/APIWebsitePolicies.h b/Source/WebKit/UIProcess/API/APIWebsitePolicies.h
>index 5f66abeba614b8a515676cf0afc7a00196d9e606..3f7aa061bf182c0c66f79ad997fa7ed9a3a320ad 100644
>--- a/Source/WebKit/UIProcess/API/APIWebsitePolicies.h
>+++ b/Source/WebKit/UIProcess/API/APIWebsitePolicies.h
>@@ -71,6 +71,9 @@ public:
> 
>     void setCustomUserAgent(const WTF::String& customUserAgent) { m_customUserAgent = customUserAgent; }
>     const WTF::String& customUserAgent() const { return m_customUserAgent; }
>+    
>+    void setCustomNavigatorPlatform(const WTF::String& customNavigatorPlatform) { m_customNavigatorPlatform = customNavigatorPlatform; }
>+    const WTF::String& customNavigatorPlatform() const { return m_customNavigatorPlatform; }
> 
> private:
>     WebsitePolicies(bool contentBlockersEnabled, OptionSet<WebKit::WebsiteAutoplayQuirk>, WebKit::WebsiteAutoplayPolicy, Vector<WebCore::HTTPHeaderField>&&, WebKit::WebsitePopUpPolicy, RefPtr<WebsiteDataStore>&&);
>@@ -82,6 +85,7 @@ private:
>     WebKit::WebsitePopUpPolicy m_popUpPolicy { WebKit::WebsitePopUpPolicy::Default };
>     RefPtr<WebsiteDataStore> m_websiteDataStore;
>     WTF::String m_customUserAgent;
>+    WTF::String m_customNavigatorPlatform;
> };
> 
> } // namespace API
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.h b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.h
>index ead50191863079a944d56bf7e1d992f07a9502fa..621a1564bf648f1ae265038a9553bbb92df393d6 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.h
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.h
>@@ -58,6 +58,7 @@ WK_CLASS_AVAILABLE(macosx(10.12.3), ios(10.3))
> @property (nonatomic) _WKWebsitePopUpPolicy popUpPolicy WK_API_AVAILABLE(macosx(10.14), ios(12.0));
> @property (nonatomic, strong) WKWebsiteDataStore *websiteDataStore WK_API_AVAILABLE(macosx(10.13.4), ios(11.3));
> @property (nonatomic, copy) NSString *customUserAgent WK_API_AVAILABLE(macosx(WK_MAC_TBA), ios(WK_IOS_TBA));
>+@property (nonatomic, copy) NSString *customNavigatorPlatform WK_API_AVAILABLE(macosx(WK_MAC_TBA), ios(WK_IOS_TBA));
> 
> @end
> 
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>index 03bd177942e5baa91d5d69b08a607153d815cd45..7f3c8225449a78e9e15482846874f2464016c805 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>@@ -193,6 +193,16 @@ - (NSString *)customUserAgent
>     return _websitePolicies->customUserAgent();
> }
> 
>+- (void)setCustomNavigatorPlatform:(NSString *)customNavigatorPlatform
>+{
>+    _websitePolicies->setCustomNavigatorPlatform(customNavigatorPlatform);
>+}
>+
>+- (NSString *)customNavigatorPlatform
>+{
>+    return _websitePolicies->customNavigatorPlatform();
>+}
>+
> - (NSString *)description
> {
>     return [NSString stringWithFormat:@"<%@: %p; contentBlockersEnabled = %d>", NSStringFromClass(self.class), self, self.contentBlockersEnabled];
>diff --git a/Source/WebKit/UIProcess/Cocoa/NavigationState.mm b/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>index f5ee4df18043d3b5a64b10d4c2e63740d9939772..e30b03f5f4c4cdc8b27dc6ac6c555ab89c9db8b7 100644
>--- a/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>+++ b/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>@@ -549,6 +549,8 @@ void NavigationState::NavigationClient::decidePolicyForNavigationAction(WebPageP
>             }
>             if (!apiWebsitePolicies->customUserAgent().isNull() && subframeNavigation)
>                 [NSException raise:NSInvalidArgumentException format:@"_WKWebsitePolicies.customUserAgent must be nil for subframe navigations."];
>+            if (!apiWebsitePolicies->customNavigatorPlatform().isNull() && subframeNavigation)
>+                [NSException raise:NSInvalidArgumentException format:@"_WKWebsitePolicies.customNavigatorPlatform must be nil for subframe navigations."];
>         }
> 
>         switch (actionPolicy) {
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageLoaderClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageLoaderClient.h
>index 040f591b7e5be431686ec2a960d15cd47ef7ac49..c33bc5c7caa08956fbfe9bed54de1a50198737dd 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageLoaderClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageLoaderClient.h
>@@ -63,6 +63,7 @@ typedef void (*WKBundlePageFeaturesUsedInPageCallback)(WKBundlePageRef page, WKA
> typedef void (*WKBundlePageWillLoadURLRequestCallback)(WKBundlePageRef page, WKURLRequestRef request, WKTypeRef userData, const void *clientInfo);
> typedef void (*WKBundlePageWillLoadDataRequestCallback)(WKBundlePageRef page, WKURLRequestRef request, WKDataRef data, WKStringRef MIMEType, WKStringRef encodingName, WKURLRef unreachableURL, WKTypeRef userData, const void *clientInfo);
> typedef WKStringRef (*WKBundlePageUserAgentForURLCallback)(WKBundleFrameRef frame, WKURLRef url, const void *clientInfo);
>+typedef WKDictionaryRef (*WKBundleNavigatorPropertiesForURLCallback)(WKBundleFrameRef frame, WKURLRef url, const void *clientInfo);
> 
> typedef struct WKBundlePageLoaderClientBase {
>     int                                                                     version;
>@@ -526,4 +527,9 @@ typedef struct WKBundlePageLoaderClientV9 {
>     WKBundlePageWillInjectUserScriptForFrameCallback                        willInjectUserScriptForFrame;
> } WKBundlePageLoaderClientV9;
> 
>+
>+
>+
>+
>+
> #endif // WKBundlePageLoaderClient_h
>diff --git a/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.cpp b/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.cpp
>index 04e9aa7d9977a6f076aef6ccd0bce16a411fb358..11a22ecf2dcaec760ddd5972c0f5e4a575d38e60 100644
>--- a/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.cpp
>+++ b/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.cpp
>@@ -72,16 +72,18 @@ static const Seconds syncWorkerTerminationTimeout { 100_ms }; // Only used by la
> 
> class ServiceWorkerFrameLoaderClient final : public EmptyFrameLoaderClient {
> public:
>-    ServiceWorkerFrameLoaderClient(WebSWContextManagerConnection& connection, PAL::SessionID sessionID, uint64_t pageID, uint64_t frameID, const String& userAgent)
>+    ServiceWorkerFrameLoaderClient(WebSWContextManagerConnection& connection, PAL::SessionID sessionID, uint64_t pageID, uint64_t frameID, const String& userAgent, const String& navigatorPlatform)
>         : m_connection(connection)
>         , m_sessionID(sessionID)
>         , m_pageID(pageID)
>         , m_frameID(frameID)
>         , m_userAgent(userAgent)
>+        , m_navigatorPlatform(navigatorPlatform)
>     {
>     }
> 
>     void setUserAgent(String&& userAgent) { m_userAgent = WTFMove(userAgent); }
>+    void setNavigatorPlatform(String&& navigatorPlatform) { m_navigatorPlatform = WTFMove(navigatorPlatform); }
> 
> private:
>     Ref<DocumentLoader> createDocumentLoader(const ResourceRequest& request, const SubstituteData& substituteData) final
>@@ -103,6 +105,7 @@ private:
>     uint64_t m_pageID { 0 };
>     uint64_t m_frameID { 0 };
>     String m_userAgent;
>+    String m_navigatorPlatform;
> };
> 
> WebSWContextManagerConnection::WebSWContextManagerConnection(Ref<IPC::Connection>&& connection, uint64_t pageGroupID, uint64_t pageID, const WebPreferencesStore& store)
>@@ -147,11 +150,11 @@ void WebSWContextManagerConnection::installServiceWorker(const ServiceWorkerCont
> 
>     // FIXME: This method should be moved directly to WebCore::SWContextManager::Connection
>     // If it weren't for ServiceWorkerFrameLoaderClient's dependence on WebDocumentLoader, this could already happen.
>-    auto frameLoaderClient = std::make_unique<ServiceWorkerFrameLoaderClient>(*this, sessionID, m_pageID, ++m_previousServiceWorkerID, m_userAgent);
>+    auto frameLoaderClient = std::make_unique<ServiceWorkerFrameLoaderClient>(*this, sessionID, m_pageID, ++m_previousServiceWorkerID, m_userAgent, m_navigatorPlatform);
>     pageConfiguration.loaderClientForMainFrame = frameLoaderClient.get();
>     m_loaders.add(WTFMove(frameLoaderClient));
> 
>-    auto serviceWorkerThreadProxy = ServiceWorkerThreadProxy::create(WTFMove(pageConfiguration), data, sessionID, String { m_userAgent }, WebProcess::singleton().cacheStorageProvider(), m_storageBlockingPolicy);
>+    auto serviceWorkerThreadProxy = ServiceWorkerThreadProxy::create(WTFMove(pageConfiguration), data, sessionID, String { m_userAgent }, WebProcess::singleton().cacheStorageProvider(), m_storageBlockingPolicy, String { m_navigatorPlatform});
>     SWContextManager::singleton().registerServiceWorkerThreadForInstall(WTFMove(serviceWorkerThreadProxy));
> 
>     LOG(ServiceWorker, "Context process PID: %i created worker thread\n", getCurrentProcessID());
>@@ -161,6 +164,11 @@ void WebSWContextManagerConnection::setUserAgent(String&& userAgent)
> {
>     m_userAgent = WTFMove(userAgent);
> }
>+    
>+void WebSWContextManagerConnection::setNavigatorPlatform(String&& navigatorPlatform)
>+{
>+    m_navigatorPlatform = WTFMove(navigatorPlatform);
>+}
> 
> void WebSWContextManagerConnection::removeFrameLoaderClient(ServiceWorkerFrameLoaderClient& client)
> {
>diff --git a/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.h b/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.h
>index d9794699c91dc5d756dc33bdb2545c5f5dc0414d..f6d530db309de68f0d7391d1583edb330b2584c3 100644
>--- a/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.h
>+++ b/Source/WebKit/WebProcess/Storage/WebSWContextManagerConnection.h
>@@ -89,6 +89,7 @@ private:
>     void claimCompleted(uint64_t claimRequestIdentifier);
>     void didFinishSkipWaiting(uint64_t callbackID);
>     void setUserAgent(String&& userAgent);
>+    void setNavigatorPlatform(String&&);
>     void terminateProcess();
> 
>     Ref<IPC::Connection> m_connectionToNetworkProcess;
>@@ -105,6 +106,7 @@ private:
>     HashMap<uint64_t, WTF::Function<void()>> m_skipWaitingRequests;
>     uint64_t m_previousRequestIdentifier { 0 };
>     String m_userAgent;
>+    String m_navigatorPlatform;
> };
> 
> } // namespace WebKit
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp b/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp
>index 3e6f31a59ecd0bcdeab205c32533ccae9c1b25e5..9a4903f8ab5b12ecb4bae006d3e2b2b321c67a09 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp
>@@ -1361,6 +1361,15 @@ String WebFrameLoaderClient::userAgent(const URL& url)
> 
>     return webPage->userAgent(m_frame, url);
> }
>+    
>+String WebFrameLoaderClient::navigatorPlatform()
>+{
>+    WebPage* webPage = m_frame->page();
>+    if (!webPage)
>+        return String();
>+    
>+    return webPage->navigatorPlatform(m_frame);
>+}
> 
> String WebFrameLoaderClient::overrideContentSecurityPolicy() const
> {
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.h
>index 7fb514770128e73f4c2eef4301bbcae9a6985e01..0ad5e6f4e304f1208eec744ea541707f1312596c 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebFrameLoaderClient.h
>@@ -192,6 +192,7 @@ private:
>     void setTitle(const WebCore::StringWithDirection&, const URL&) final;
>     
>     String userAgent(const URL&) final;
>+    String navigatorPlatform() final;
> 
>     String overrideContentSecurityPolicy() const final;
> 
>diff --git a/Source/WebKit/WebProcess/WebPage/WebPage.cpp b/Source/WebKit/WebProcess/WebPage/WebPage.cpp
>index cb719d405c43adaee4f2c538afaa821b1abdc61c..582b43f5c889153e65ebe11a2b763aea2ea0fda6 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebPage.cpp
>+++ b/Source/WebKit/WebProcess/WebPage/WebPage.cpp
>@@ -3098,6 +3098,30 @@ void WebPage::setUserAgent(const String& userAgent)
>     if (m_page)
>         m_page->userAgentChanged();
> }
>+    
>+String WebPage::navigatorPlatform() const
>+{
>+    return navigatorPlatform(nullptr);
>+}
>+    
>+String WebPage::navigatorPlatform(WebFrame* frame) const
>+{
>+    String platform = platformNavigatorPlatform();
>+    if (!platform.isEmpty())
>+        return platform;
>+    return m_navigatorPlatform;
>+}
>+    
>+void WebPage::setNavigatorPlatform(const String& navigatorPlatform)
>+{
>+    if (m_navigatorPlatform == navigatorPlatform)
>+        return;
>+
>+    m_navigatorPlatform = navigatorPlatform;
>+
>+    if (m_page)
>+        m_page->userAgentChanged();
>+}
> 
> void WebPage::suspendActiveDOMObjectsAndAnimations()
> {
>diff --git a/Source/WebKit/WebProcess/WebPage/WebPage.h b/Source/WebKit/WebProcess/WebPage/WebPage.h
>index e0af2f636866d4beb4a9c5e9e0ba1d0684871004..b4773872868779f0b6c3329e4e0aa8cdb5660f66 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebPage.h
>+++ b/Source/WebKit/WebProcess/WebPage/WebPage.h
>@@ -344,6 +344,9 @@ public:
>     String userAgent(const URL&) const;
>     String userAgent(WebFrame*, const URL&) const;
>     String platformUserAgent(const URL&) const;
>+    String navigatorPlatform() const;
>+    String navigatorPlatform(WebFrame*) const;
>+    String platformNavigatorPlatform() const;
>     WebCore::KeyboardUIMode keyboardUIMode();
> 
>     void didInsertMenuElement(WebCore::HTMLMenuElement&);
>@@ -1293,6 +1296,7 @@ private:
>     void didReceivePolicyDecision(uint64_t frameID, uint64_t listenerID, WebCore::PolicyAction, uint64_t navigationID, const DownloadID&, std::optional<WebsitePoliciesData>&&);
>     void continueWillSubmitForm(uint64_t frameID, uint64_t listenerID);
>     void setUserAgent(const String&);
>+    void setNavigatorPlatform(const String&);
>     void setCustomTextEncodingName(const String&);
>     void suspendActiveDOMObjectsAndAnimations();
>     void resumeActiveDOMObjectsAndAnimations();
>@@ -1481,6 +1485,7 @@ private:
>     RefPtr<WebPageGroupProxy> m_pageGroup;
> 
>     String m_userAgent;
>+    String m_navigatorPlatform;
> 
>     WebCore::IntSize m_viewSize;
>     std::unique_ptr<DrawingArea> m_drawingArea;
>diff --git a/Source/WebKit/WebProcess/WebPage/ios/WebPageIOS.mm b/Source/WebKit/WebProcess/WebPage/ios/WebPageIOS.mm
>index 9df618a4d9ad8e9b1d63206c60051dafb76db235..bf451ff8107ed8a68176ad93ea7b23f10771003e 100644
>--- a/Source/WebKit/WebProcess/WebPage/ios/WebPageIOS.mm
>+++ b/Source/WebKit/WebProcess/WebPage/ios/WebPageIOS.mm
>@@ -3124,6 +3124,11 @@ String WebPage::platformUserAgent(const URL&) const
> {
>     return String();
> }
>+    
>+String WebPage::platformNavigatorPlatform() const
>+{
>+    return String();
>+}
> 
> void WebPage::hardwareKeyboardAvailabilityChanged()
> {
>diff --git a/Source/WebKit/WebProcess/WebPage/mac/WebPageMac.mm b/Source/WebKit/WebProcess/WebPage/mac/WebPageMac.mm
>index fa7a6aaf1b60bda90dcd079ba1a9436f1216b0dc..46c546a14784b2145c471da06d31d1c0c8d3437a 100644
>--- a/Source/WebKit/WebProcess/WebPage/mac/WebPageMac.mm
>+++ b/Source/WebKit/WebProcess/WebPage/mac/WebPageMac.mm
>@@ -826,6 +826,10 @@ String WebPage::platformUserAgent(const URL&) const
> {
>     return String();
> }
>+String WebPage::platformNavigatorPlatform() const
>+{
>+    return String();
>+}
> 
> void WebPage::performImmediateActionHitTestAtLocation(WebCore::FloatPoint locationInViewCoordinates)
> {
>diff --git a/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.h b/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.h
>index 99910382b4fea44bb8584fafab9fbeccedf6d712..52e0eeaa49cd9bc04eb124da26705532398e3b4b 100644
>--- a/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.h
>+++ b/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.h
>@@ -177,6 +177,7 @@ private:
>     bool shouldFallBack(const WebCore::ResourceError&) final;
> 
>     WTF::String userAgent(const URL&) final;
>+    WTF::String navigatorPlatform() final;
>     
>     void savePlatformDataToCachedFrame(WebCore::CachedFrame*) final;
>     void transitionToCommittedFromCachedFrame(WebCore::CachedFrame*) final;
>diff --git a/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.mm b/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.mm
>index ec8e58cf207bbcb04822ed2b15dead06762a567d..d165c81e88117eb5860f1241a68765e06b2deeeb 100644
>--- a/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.mm
>+++ b/Source/WebKitLegacy/mac/WebCoreSupport/WebFrameLoaderClient.mm
>@@ -1548,6 +1548,11 @@ String WebFrameLoaderClient::userAgent(const URL& url)
>     return [webView _userAgentString];
> }
> 
>+String WebFrameLoaderClient::navigatorPlatform()
>+{
>+    return emptyString();
>+}
>+
> NSDictionary *WebFrameLoaderClient::actionDictionary(const NavigationAction& action, FormState* formState) const
> {
>     unsigned modifierFlags = 0;
>diff --git a/Tools/ChangeLog b/Tools/ChangeLog
>index 43b1b3099d17a311042ffea1bfa0bd7c2584dc73..ddce8366ba5f2d638deba66fa3a05ee088be270a 100644
>--- a/Tools/ChangeLog
>+++ b/Tools/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-12-14  Megan Gardner  <megan_gardner@apple.com>
>+
>+        Allow clients to set the navigator platform
>+        https://bugs.webkit.org/show_bug.cgi?id=192735
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Add a test for setting a custom navigator platform.
>+
>+        * TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm:
>+        (-[CustomNavigatorPlatformDelegate _webView:decidePolicyForNavigationAction:userInfo:decisionHandler:]):
>+        (-[CustomNavigatorPlatformDelegate webView:didFinishNavigation:]):
>+
> 2018-12-13  Ross Kirsling  <ross.kirsling@sony.com>
> 
>         Unreviewed -- update my status to "reviewer".
>diff --git a/Tools/TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm b/Tools/TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm
>index 88c4af4c04345c44ca0d39947b8d819c518ff1b5..503c3f7a83cc2071e52750313d1857978e2859e5 100644
>--- a/Tools/TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm
>+++ b/Tools/TestWebKitAPI/Tests/WebKitCocoa/WebsitePolicies.mm
>@@ -974,6 +974,41 @@ TEST(WebKit, WebsitePoliciesCustomUserAgent)
>     loadCount = 0;
> }
> 
>+@interface CustomNavigatorPlatformDelegate : NSObject <WKNavigationDelegate> {
>+}
>+@end
>+
>+@implementation CustomNavigatorPlatformDelegate
>+
>+- (void)_webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction userInfo:(id <NSSecureCoding>)userInfo decisionHandler:(void (^)(WKNavigationActionPolicy, _WKWebsitePolicies *))decisionHandler
>+{
>+    _WKWebsitePolicies *websitePolicies = [[[_WKWebsitePolicies alloc] init] autorelease];
>+    if (navigationAction.targetFrame.mainFrame)
>+        [websitePolicies setCustomNavigatorPlatform:@"Test Custom Platform"];
>+
>+    decisionHandler(WKNavigationActionPolicyAllow, websitePolicies);
>+}
>+
>+- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
>+{
>+    finishedNavigation = true;
>+}
>+
>+@end
>+
>+TEST(WebKit, WebsitePoliciesCustomNavigatorPlatform)
>+{
>+    auto configuration = adoptNS([[WKWebViewConfiguration alloc] init]);
>+    
>+    auto webView = adoptNS([[TestWKWebView alloc] initWithFrame:NSMakeRect(0, 0, 800, 600) configuration:configuration.get()]);
>+
>+    auto delegate = adoptNS([[CustomNavigatorPlatformDelegate alloc] init]);
>+    [webView setNavigationDelegate:delegate.get()];
>+
>+    EXPECT_STREQ("Test Custom Platform", [[webView stringByEvaluatingJavaScript:@"navigator.platform"] UTF8String]);
>+}
>+
>+
> @interface PopUpPoliciesDelegate : NSObject <WKNavigationDelegate, WKUIDelegatePrivate>
> @property (nonatomic, copy) _WKWebsitePopUpPolicy(^popUpPolicyForURL)(NSURL *);
> @end

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Attachments on bug 192735: 357380 | 357387 | 357388 | 357389 | 357390 | 357618 | 357631 | 357634 | 357636 | 357646 | 357706