Attachment 347470 Details for Bug 188735 – Patch

[patch] Patch

bug-188735-20180819170108.patch (text/plain), 59.21 KB, created by Darin Adler on 2018-08-19 17:01:09 PDT

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Creator: Darin Adler

Created: 2018-08-19 17:01:09 PDT

Size: 59.21 KB

patch

obsolete

>Subversion Revision: 235019
>diff --git a/Source/WebKit/ChangeLog b/Source/WebKit/ChangeLog
>index 028de973fb79443bfce8ca23fa9917b12c80cca3..4fab7544b9187e34fd89be5223bce433ef4f194f 100644
>--- a/Source/WebKit/ChangeLog
>+++ b/Source/WebKit/ChangeLog
>@@ -1,3 +1,193 @@
>+2018-08-19  Darin Adler  <darin@apple.com>
>+
>+        [Cocoa] Update uses of wrapper template functions in WebKit for clarity, simplicity, better ARC readiness
>+        https://bugs.webkit.org/show_bug.cgi?id=188735
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Because of argument-dependent lookup, there should never be a reason to call
>+        the wrapper function as WebKit::wrapper or API::wrapper unless there is a need
>+        to resolve a name conflict, so removed the explicit namespacing.
>+
>+        * UIProcess/API/C/mac/WKPagePrivateMac.mm:
>+        (WKPageLoadURLRequestReturningNavigation): Removed explicit null check and
>+        leakRef/autorelease pair, both done by the wrapper template function now.
>+
>+        * UIProcess/API/Cocoa/WKBackForwardList.mm:
>+        (toWKBackForwardListItem): Deleted.
>+        (-[WKBackForwardList currentItem]): Use wrapper instead of toWKBackForwardListItem.
>+        (-[WKBackForwardList backItem]): Ditto.
>+        (-[WKBackForwardList forwardItem]): Ditto.
>+        (-[WKBackForwardList itemAtIndex:]): Ditto.
>+        (-[WKBackForwardList backList]): Removed leakRef/autorelease pair.
>+        (-[WKBackForwardList forwardList]): Ditto.
>+
>+        * UIProcess/API/Cocoa/WKContentRuleListStore.mm:
>+        (+[WKContentRuleListStore defaultStore]): Removed explicit WebKit namespace.
>+        (+[WKContentRuleListStore storeWithURL:]): Fixed storage leak by removing leakRef,
>+        which was not balanced. This is not a copy or create function, so it should not
>+        return an object that requires a release to balance it.
>+        (-[WKContentRuleListStore _compileContentRuleListForIdentifier:encodedContentRuleList:completionHandler:releasesArgument:]):
>+        Removed explicit WebKit namespace and unneeded get().
>+        (-[WKContentRuleListStore lookUpContentRuleListForIdentifier:completionHandler:]):
>+        Removed explicit WebKit namespace.
>+        (+[WKContentRuleListStore defaultStoreWithLegacyFilename]): Ditto.
>+        (+[WKContentRuleListStore storeWithURLAndLegacyFilename:]): Fixed storage leak,
>+        as above in storeWithURL.
>+
>+        * UIProcess/API/Cocoa/WKFrameInfo.mm:
>+        (-[WKFrameInfo _handle]): Removed explicit WebKit namespace.
>+        * UIProcess/API/Cocoa/WKHTTPCookieStore.mm:
>+        (WKHTTPCookieStoreObserver::cookiesDidChange): Ditto.
>+
>+        * UIProcess/API/Cocoa/WKNavigationAction.mm:
>+        (-[WKNavigationAction sourceFrame]): Removed explicit null check, now done by
>+        the wrapper template function.
>+        (-[WKNavigationAction targetFrame]): Ditto.
>+        (-[WKNavigationAction _userInitiatedAction]): Ditto.
>+        (-[WKNavigationAction _mainFrameNavigation]): Ditto.
>+
>+        * UIProcess/API/Cocoa/WKOpenPanelParameters.mm:
>+        (-[WKOpenPanelParameters _acceptedMIMETypes]): Removed leakRef/autorelease pair,
>+        now done by the wrapper template function.
>+        (-[WKOpenPanelParameters _acceptedFileExtensions]): Ditto.
>+
>+        * UIProcess/API/Cocoa/WKPreferences.mm:
>+        (-[WKPreferences copyWithZone:]): Use retain instead of leakRef; slightly clearer
>+        for when we convert to ARC.
>+        (+[WKPreferences _experimentalFeatures]): Removed leakRef/autorelease pair,
>+        now done by the wrapper template function.
>+
>+        * UIProcess/API/Cocoa/WKProcessPool.mm:
>+        (-[WKProcessPool _configuration]): Fixed a storage leak by removing leakRef,
>+        which was not balanaced. This is not a copy or create function, so it should not
>+        return an object that requires a release to balance it.
>+
>+        * UIProcess/API/Cocoa/WKURLSchemeTaskInternal.h:
>+        Replaced inline wrapper function with WrapperTraits structure template specialization.
>+
>+        * UIProcess/API/Cocoa/WKUserScript.mm:
>+        (-[WKUserScript _userContentWorld]): Removed explicit API namespace.
>+
>+        * UIProcess/API/Cocoa/WKWebView.mm:
>+        (-[WKWebView loadRequest:]): Removed explicit null check and
>+        leakRef/autorelease pair, both done by the wrapper template function now.
>+        (-[WKWebView loadFileURL:allowingReadAccessToURL:]): Ditto.
>+        (-[WKWebView loadData:MIMEType:characterEncodingName:baseURL:]): Ditto.
>+        (-[WKWebView goToBackForwardListItem:]): Ditto.
>+        (-[WKWebView goBack]): Ditto.
>+        (-[WKWebView goForward]): Ditto.
>+        (-[WKWebView reload]): Ditto.
>+        (-[WKWebView reloadFromOrigin]): Ditto.
>+        (-[WKWebView _didInsertAttachment:withSource:]): Removed leakRef/autorelease pairs,
>+        now done by the wrapper template function.
>+        (-[WKWebView _didRemoveAttachment:]): Ditto.
>+        (-[WKWebView _loadData:MIMEType:characterEncodingName:baseURL:userData:]): Removed
>+        explicit null check and leakRef/autorelease pair, both done by the wrapper template
>+        function now.
>+        (-[WKWebView _loadRequest:shouldOpenExternalURLs:]): Ditto.
>+        (-[WKWebView _reloadWithoutContentBlockers]): Ditto.
>+        (-[WKWebView _reloadExpiredOnly]): Ditto.
>+        (-[WKWebView _sessionStateData]): Removed explicit leakRef/autorelease pair, done
>+        by the wrapper template function now. Also, the old version explicitly dereferenced
>+        and would not work when the result of encodeLegacySessionState was null. Decided
>+        not to add a call to releaseNonNull to preserve that possibly-incorrect optimization,
>+        instead allowing the wrapper function to generate code to handle the null case.
>+        (-[WKWebView _sessionState]): Use the Objective-C autorelease instead of adoptNS
>+        and RetainPtr's autorelease.
>+        (-[WKWebView _sessionStateWithFilter:]): Ditto.
>+        (-[WKWebView _restoreSessionState:andNavigate:]): Removed explicit null check and
>+        leakRef/autorelease pair, both done by the wrapper template function now.
>+        (-[WKWebView _insertAttachmentWithFilename:contentType:data:options:completion:]):
>+        Removed explicit leakRef/autorelease pair, done by the wrapper template function now.
>+        (-[WKWebView _diagnosticLoggingDelegate]): Replaced a leakRef/autorelease pair with
>+        use of RetainPtr's autorelease.
>+        (-[WKWebView _findDelegate]): Ditto.
>+
>+        * UIProcess/API/Cocoa/WKWebViewConfiguration.mm:
>+        (-[WKWebViewConfiguration _applicationManifest]): Removed explicit null check,
>+        done by the wrapper template function now.
>+
>+        * UIProcess/API/Cocoa/WKWebsiteDataStore.mm:
>+        (+[WKWebsiteDataStore defaultDataStore]): Removed explicit WebKit namespace
>+        and unneeded call to get().
>+        (+[WKWebsiteDataStore nonPersistentDataStore]): Removed explicit WebKit namespace
>+        and leakRef/autorelease pair, done by the wrapper template function now.
>+        (-[WKWebsiteDataStore httpCookieStore]): Removed explicit WebKit namespace.
>+
>+        * UIProcess/API/Cocoa/_WKApplicationManifest.mm:
>+        (+[_WKApplicationManifest applicationManifestFromJSON:manifestURL:documentURL:]):
>+        Removed explicit leakRef/autorelease pair, done by the wrapper template function now.
>+        * UIProcess/API/Cocoa/_WKGeolocationPosition.mm:
>+        (WebKit::wrapper): Ditto.
>+
>+        * UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm:
>+        (-[_WKProcessPoolConfiguration copyWithZone:]): Use retain instead of leakRef;
>+        slightly clearer for when we convert to ARC.
>+
>+        * UIProcess/API/Cocoa/_WKUserContentWorld.mm:
>+        (+[_WKUserContentWorld worldWithName:]): Removed explicit leakRef/autorelease pair,
>+        done by the wrapper template function now.
>+
>+        * UIProcess/API/Cocoa/_WKWebsitePolicies.mm:
>+        (-[_WKWebsitePolicies websiteDataStore]): Removed explicit null check, done by
>+        the wrapper template function now.
>+
>+        * UIProcess/Cocoa/NavigationState.mm:
>+        (WebKit::NavigationState::NavigationClient::didChangeBackForwardList): Removed
>+        explicit null check, done by the wrapper template function now.
>+        (WebKit::NavigationState::NavigationClient::decidePolicyForNavigationAction): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didStartProvisionalNavigation): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didReceiveServerRedirectForProvisionalNavigation): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didFailProvisionalNavigationWithError): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didFailProvisionalLoadInSubframeWithError): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didCommitNavigation): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didFinishDocumentLoad): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didFinishNavigation): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didFailNavigationWithError): Ditto.
>+        (WebKit::NavigationState::NavigationClient::didSameDocumentNavigation): Ditto.
>+
>+        * UIProcess/Cocoa/SessionStateCoding.mm:
>+        (WebKit::encodeSessionState): Removed explicit leakRef/autorelease pair, done
>+        by the wrapper template function now. Also, the old version explicitly dereferenced
>+        and would not work when the result of encodeLegacySessionState was null. Decided
>+        not to add a call to releaseNonNull to preserve that possibly-incorrect optimization,
>+        instead allowing the wrapper function to generate code to handle the null case.
>+
>+        * UIProcess/mac/WKInspectorViewController.mm:
>+        (-[WKInspectorViewController configuration]): Removed explicit WebKit namespace.
>+
>+        * WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm:
>+        (+[WKWebProcessPlugInFrame lookUpFrameFromHandle:]): Removed explicit null check,
>+        done by the wrapper template function now.
>+        (-[WKWebProcessPlugInFrame hitTest:]): Removed explicit leakRef/autorelease pair, done
>+        by the wrapper template function now. Also, the old version explicitly dereferenced
>+        and would not work when the result of hitTest was null. Decided not to add a call to
>+        releaseNonNull to preserve that possibly-incorrect optimization, instead allowing the
>+        wrapper function to generate code to handle the null case.
>+        (-[WKWebProcessPlugInFrame childFrames]): Removed explicit leakRef/autorelease pair,
>+        done by the wrapper template function now.
>+        (-[WKWebProcessPlugInFrame handle]): Ditto.
>+        (-[WKWebProcessPlugInFrame _parentFrame]): Removed explicit null check, done by the
>+        wrapper template function now.
>+
>+        * WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm:
>+        (-[WKWebProcessPlugInHitTestResult nodeHandle]): Removed explicit null check and
>+        leakRef/autorelease pair, both done by the wrapper template function now.
>+        * WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm:
>+        (+[WKWebProcessPlugInNodeHandle nodeHandleWithJSValue:inContext:]): Ditto.
>+        (-[WKWebProcessPlugInNodeHandle htmlIFrameElementContentFrame]): Ditto.
>+        (-[WKWebProcessPlugInNodeHandle HTMLTableCellElementCellAbove]): Ditto.
>+        (-[WKWebProcessPlugInNodeHandle frame]): Ditto.
>+        * WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm:
>+        (+[WKWebProcessPlugInRangeHandle rangeHandleWithJSValue:inContext:]): Ditto.
>+        (-[WKWebProcessPlugInRangeHandle frame]): Ditto.
>+        * WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm:
>+        (+[WKWebProcessPlugInScriptWorld world]): Ditto.
>+        * WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm:
>+        (-[WKWebProcessPlugInBrowserContextController mainFrame]): Ditto.
>+        (+[WKWebProcessPlugInBrowserContextController lookUpBrowsingContextFromHandle:]): Ditto.
>+
> 2018-08-19  Darin Adler  <darin@apple.com>
> 
>         [Cocoa] Consolidate inline "wrapper" functions in WebKit API into function templates and WrapperTraits
>diff --git a/Source/WebKit/UIProcess/API/C/mac/WKPagePrivateMac.mm b/Source/WebKit/UIProcess/API/C/mac/WKPagePrivateMac.mm
>index 2eb36b562abfe26565db41f922792901360e716b..1994f3dc9d4fcfe0130573a8cabcca57ca54c6b2 100644
>--- a/Source/WebKit/UIProcess/API/C/mac/WKPagePrivateMac.mm
>+++ b/Source/WebKit/UIProcess/API/C/mac/WKPagePrivateMac.mm
>@@ -143,12 +143,7 @@ bool WKPageIsURLKnownHSTSHost(WKPageRef page, WKURLRef url)
> WKNavigation *WKPageLoadURLRequestReturningNavigation(WKPageRef pageRef, WKURLRequestRef urlRequestRef)
> {
>     auto resourceRequest = toImpl(urlRequestRef)->resourceRequest();
>-    auto navigation = toImpl(pageRef)->loadRequest(WTFMove(resourceRequest));
>-
>-    if (!navigation)
>-        return nil;
>-
>-    return [API::wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(toImpl(pageRef)->loadRequest(WTFMove(resourceRequest)));
> }
> #endif
> 
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKBackForwardList.mm b/Source/WebKit/UIProcess/API/Cocoa/WKBackForwardList.mm
>index 2c96965478029dcd27ec531036d2a6a5c8ae23a9..79e5d239b9b80cf67417e93f888c99962004d7f9 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKBackForwardList.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKBackForwardList.mm
>@@ -44,42 +44,34 @@ - (void)dealloc
>     [super dealloc];
> }
> 
>-static WKBackForwardListItem *toWKBackForwardListItem(WebBackForwardListItem* item)
>-{
>-    if (!item)
>-        return nil;
>-
>-    return wrapper(*item);
>-}
>-
> - (WKBackForwardListItem *)currentItem
> {
>-    return toWKBackForwardListItem(_list->currentItem());
>+    return wrapper(_list->currentItem());
> }
> 
> - (WKBackForwardListItem *)backItem
> {
>-    return toWKBackForwardListItem(_list->backItem());
>+    return wrapper(_list->backItem());
> }
> 
> - (WKBackForwardListItem *)forwardItem
> {
>-    return toWKBackForwardListItem(_list->forwardItem());
>+    return wrapper(_list->forwardItem());
> }
> 
> - (WKBackForwardListItem *)itemAtIndex:(NSInteger)index
> {
>-    return toWKBackForwardListItem(_list->itemAtIndex(index));
>+    return wrapper(_list->itemAtIndex(index));
> }
> 
> - (NSArray *)backList
> {
>-    return [wrapper(_list->backList().leakRef()) autorelease];
>+    return wrapper(_list->backList());
> }
> 
> - (NSArray *)forwardList
> {
>-    return [wrapper(_list->forwardList().leakRef()) autorelease];
>+    return wrapper(_list->forwardList());
> }
> 
> #pragma mark WKObject protocol implementation
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKContentRuleListStore.mm b/Source/WebKit/UIProcess/API/Cocoa/WKContentRuleListStore.mm
>index 56355af9383481687c4a580ff431e4d8303a9e75..4b41b43968c2e8b0059aa51d438ae3a33cbe7bba 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKContentRuleListStore.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKContentRuleListStore.mm
>@@ -63,14 +63,13 @@ - (void)dealloc
> + (instancetype)defaultStore
> {
>     const bool legacyFilename = false;
>-    return WebKit::wrapper(API::ContentRuleListStore::defaultStore(legacyFilename));
>+    return wrapper(API::ContentRuleListStore::defaultStore(legacyFilename));
> }
> 
> + (instancetype)storeWithURL:(NSURL *)url
> {
>     const bool legacyFilename = false;
>-    Ref<API::ContentRuleListStore> store = API::ContentRuleListStore::storeWithPath(url.absoluteURL.fileSystemRepresentation, legacyFilename);
>-    return WebKit::wrapper(store.leakRef());
>+    return wrapper(API::ContentRuleListStore::storeWithPath(url.absoluteURL.fileSystemRepresentation, legacyFilename));
> }
> 
> - (void)compileContentRuleListForIdentifier:(NSString *)identifier encodedContentRuleList:(NSString *)encodedContentRuleList completionHandler:(void (^)(WKContentRuleList *, NSError *))completionHandler
>@@ -94,7 +93,7 @@ - (void)_compileContentRuleListForIdentifier:(NSString *)identifier encodedConte
>             // We want to use error.message, but here we want to only pass on CompileFailed with userInfo from the std::error_code.
>             return completionHandler(nil, [NSError errorWithDomain:WKErrorDomain code:WKErrorContentRuleListStoreCompileFailed userInfo:userInfo]);
>         }
>-        completionHandler(WebKit::wrapper(*contentRuleList.get()), nil);
>+        completionHandler(wrapper(*contentRuleList), nil);
>     });
> }
> 
>@@ -108,7 +107,7 @@ - (void)lookUpContentRuleListForIdentifier:(NSString *)identifier completionHand
>             return completionHandler(nil, [NSError errorWithDomain:WKErrorDomain code:wkError userInfo:userInfo]);
>         }
> 
>-        completionHandler(WebKit::wrapper(*contentRuleList.get()), nil);
>+        completionHandler(wrapper(*contentRuleList), nil);
>     });
> }
> 
>@@ -180,14 +179,13 @@ - (void)_compileContentRuleListForIdentifier:(NSString *)identifier encodedConte
> + (instancetype)defaultStoreWithLegacyFilename
> {
>     const bool legacyFilename = true;
>-    return WebKit::wrapper(API::ContentRuleListStore::defaultStore(legacyFilename));
>+    return wrapper(API::ContentRuleListStore::defaultStore(legacyFilename));
> }
> 
> + (instancetype)storeWithURLAndLegacyFilename:(NSURL *)url
> {
>     const bool legacyFilename = true;
>-    Ref<API::ContentRuleListStore> store = API::ContentRuleListStore::storeWithPath(url.absoluteURL.fileSystemRepresentation, legacyFilename);
>-    return WebKit::wrapper(store.leakRef());
>+    return wrapper(API::ContentRuleListStore::storeWithPath(url.absoluteURL.fileSystemRepresentation, legacyFilename));
> }
> 
> @end
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKFrameInfo.mm b/Source/WebKit/UIProcess/API/Cocoa/WKFrameInfo.mm
>index be6eb3f78432e991764b959946f06383d000aa13..3d1a6de873e28d3fc81ed0dc506280e8157cbfce 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKFrameInfo.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKFrameInfo.mm
>@@ -86,7 +86,7 @@ @implementation WKFrameInfo (WKPrivate)
> 
> - (_WKFrameHandle *)_handle
> {
>-    return WebKit::wrapper(_frameInfo->handle());
>+    return wrapper(_frameInfo->handle());
> }
> 
> @end
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm b/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>index 0a0863a80f61c6622a21dbed72f967bfd886a31f..55324a1b6b84c4716acce47c16fe47423d75c58c 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKHTTPCookieStore.mm
>@@ -56,7 +56,7 @@ public:
> private:
>     void cookiesDidChange(API::HTTPCookieStore& cookieStore) final
>     {
>-        [m_observer.get() cookiesDidChangeInCookieStore:WebKit::wrapper(cookieStore)];
>+        [m_observer cookiesDidChangeInCookieStore:wrapper(cookieStore)];
>     }
> 
>     WeakObjCPtr<id<WKHTTPCookieStoreObserver>> m_observer;
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKNavigationAction.mm b/Source/WebKit/UIProcess/API/Cocoa/WKNavigationAction.mm
>index 3f8ff695b22425ce27eee9aab5f8e3ccf93b7fd1..c7d5905632982dca99cec398d998caafa82a1955 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKNavigationAction.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKNavigationAction.mm
>@@ -137,16 +137,12 @@ - (NSString *)description
> 
> - (WKFrameInfo *)sourceFrame
> {
>-    if (API::FrameInfo* frameInfo = _navigationAction->sourceFrame())
>-        return wrapper(*frameInfo);
>-    return nil;
>+    return wrapper(_navigationAction->sourceFrame());
> }
> 
> - (WKFrameInfo *)targetFrame
> {
>-    if (API::FrameInfo* frameInfo = _navigationAction->targetFrame())
>-        return wrapper(*frameInfo);
>-    return nil;
>+    return wrapper(_navigationAction->targetFrame());
> }
> 
> - (WKNavigationType)navigationType
>@@ -226,10 +222,7 @@ - (BOOL)_shouldOpenExternalURLs
> 
> - (_WKUserInitiatedAction *)_userInitiatedAction
> {
>-    auto userInitiatedAction = _navigationAction->userInitiatedAction();
>-    if (userInitiatedAction)
>-        return wrapper(*userInitiatedAction);
>-    return nil;
>+    return wrapper(_navigationAction->userInitiatedAction());
> }
> 
> - (BOOL)_isRedirect
>@@ -239,10 +232,7 @@ - (BOOL)_isRedirect
> 
> - (WKNavigation *)_mainFrameNavigation
> {
>-    if (auto* navigation = _navigationAction->mainFrameNavigation())
>-        return wrapper(*navigation);
>-    
>-    return nil;
>+    return wrapper(_navigationAction->mainFrameNavigation());
> }
> 
> @end
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKOpenPanelParameters.mm b/Source/WebKit/UIProcess/API/Cocoa/WKOpenPanelParameters.mm
>index 8d2509b335ff65f62c46ac5fa7d816f8845ed156..3dbd54522a65db741b06bf47b5ca0375f14e923b 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKOpenPanelParameters.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKOpenPanelParameters.mm
>@@ -55,12 +55,12 @@ @implementation WKOpenPanelParameters (WKPrivate)
> 
> - (NSArray<NSString *> *)_acceptedMIMETypes
> {
>-    return [wrapper(_openPanelParameters->acceptMIMETypes().leakRef()) autorelease];
>+    return wrapper(_openPanelParameters->acceptMIMETypes());
> }
> 
> - (NSArray<NSString *> *)_acceptedFileExtensions
> {
>-    return [wrapper(_openPanelParameters->acceptFileExtensions().leakRef()) autorelease];
>+    return wrapper(_openPanelParameters->acceptFileExtensions());
> }
> 
> @end
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKPreferences.mm b/Source/WebKit/UIProcess/API/Cocoa/WKPreferences.mm
>index be43285a5f2af0675e5b24203a9451772375eb06..c49b4768a2d801e1a299f4c69f0b37c8bd20ae3a 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKPreferences.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKPreferences.mm
>@@ -97,7 +97,7 @@ - (instancetype)initWithCoder:(NSCoder *)coder
> 
> - (id)copyWithZone:(NSZone *)zone
> {
>-    return wrapper(_preferences->copy().leakRef());
>+    return [wrapper(_preferences->copy()) retain];
> }
> 
> - (CGFloat)minimumFontSize
>@@ -530,7 +530,7 @@ - (void)_setFixedPitchFontFamily:(NSString *)fixedPitchFontFamily
> + (NSArray<_WKExperimentalFeature *> *)_experimentalFeatures
> {
>     auto features = WebKit::WebPreferences::experimentalFeatures();
>-    return [wrapper(API::Array::create(WTFMove(features)).leakRef()) autorelease];
>+    return wrapper(API::Array::create(WTFMove(features)));
> }
> 
> - (BOOL)_isEnabledForFeature:(_WKExperimentalFeature *)feature
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKProcessPool.mm b/Source/WebKit/UIProcess/API/Cocoa/WKProcessPool.mm
>index ab319e79edd17915fe9b15b69a8dbcaab5de1263..e390b9d355644556a1572f67a7061b54b2b6daf3 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKProcessPool.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKProcessPool.mm
>@@ -126,7 +126,7 @@ - (NSString *)description
> 
> - (_WKProcessPoolConfiguration *)_configuration
> {
>-    return wrapper(_processPool->configuration().copy().leakRef());
>+    return wrapper(_processPool->configuration().copy());
> }
> 
> - (API::Object&)_apiObject
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKURLSchemeTaskInternal.h b/Source/WebKit/UIProcess/API/Cocoa/WKURLSchemeTaskInternal.h
>index 5797580d224560ec8e7a64f3ea557a0e0eef2f46..52b87484920b8e0042ac90377d340c2dd2f88f98 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKURLSchemeTaskInternal.h
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKURLSchemeTaskInternal.h
>@@ -1,5 +1,5 @@
> /*
>- * Copyright (C) 2017 Apple Inc. All rights reserved.
>+ * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
>  *
>  * Redistribution and use in source and binary forms, with or without
>  * modification, are permitted provided that the following conditions
>@@ -35,11 +35,9 @@
> 
> namespace WebKit {
> 
>-inline id<WKURLSchemeTask> wrapper(API::URLSchemeTask& urlSchemeTask)
>-{
>-    ASSERT([urlSchemeTask.wrapper() isKindOfClass:[WKURLSchemeTaskImpl class]]);
>-    return (id<WKURLSchemeTask>)urlSchemeTask.wrapper();
>-}
>+template<> struct WrapperTraits<API::URLSchemeTask> {
>+    using WrapperClass = WKURLSchemeTaskImpl;
>+};
> 
> }
> 
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKUserScript.mm b/Source/WebKit/UIProcess/API/Cocoa/WKUserScript.mm
>index 1740a22d3068898e782dfbb016b02c3775537a42..9cf6681aab391c35b637907b111086f827976d5a 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKUserScript.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKUserScript.mm
>@@ -102,7 +102,7 @@ - (instancetype)_initWithSource:(NSString *)source injectionTime:(WKUserScriptIn
> 
> - (_WKUserContentWorld *)_userContentWorld
> {
>-    return API::wrapper(_userScript->userContentWorld());
>+    return wrapper(_userScript->userContentWorld());
> }
> 
> @end
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm b/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>index 6cb60093cb0969170eb89af254c68ace456f85d7..f02301813e02af3362bfc5b3c47e39dafd1c4f5e 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm
>@@ -857,11 +857,7 @@ - (void)_setIconLoadingDelegate:(id<_WKIconLoadingDelegate>)iconLoadingDelegate
> 
> - (WKNavigation *)loadRequest:(NSURLRequest *)request
> {
>-    auto navigation = _page->loadRequest(request);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->loadRequest(request));
> }
> 
> - (WKNavigation *)loadFileURL:(NSURL *)URL allowingReadAccessToURL:(NSURL *)readAccessURL
>@@ -872,11 +868,7 @@ - (WKNavigation *)loadFileURL:(NSURL *)URL allowingReadAccessToURL:(NSURL *)read
>     if (![readAccessURL isFileURL])
>         [NSException raise:NSInvalidArgumentException format:@"%@ is not a file URL", readAccessURL];
> 
>-    auto navigation = _page->loadFile([URL _web_originalDataAsWTFString], [readAccessURL _web_originalDataAsWTFString]);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->loadFile([URL _web_originalDataAsWTFString], [readAccessURL _web_originalDataAsWTFString]));
> }
> 
> - (WKNavigation *)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL
>@@ -888,20 +880,12 @@ - (WKNavigation *)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL
> 
> - (WKNavigation *)loadData:(NSData *)data MIMEType:(NSString *)MIMEType characterEncodingName:(NSString *)characterEncodingName baseURL:(NSURL *)baseURL
> {
>-    auto navigation = _page->loadData({ static_cast<const uint8_t*>(data.bytes), data.length }, MIMEType, characterEncodingName, baseURL.absoluteString);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->loadData({ static_cast<const uint8_t*>(data.bytes), data.length }, MIMEType, characterEncodingName, baseURL.absoluteString));
> }
> 
> - (WKNavigation *)goToBackForwardListItem:(WKBackForwardListItem *)item
> {
>-    auto navigation = _page->goToBackForwardItem(item._item);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->goToBackForwardItem(item._item));
> }
> 
> - (NSString *)title
>@@ -954,20 +938,12 @@ - (BOOL)canGoForward
> 
> - (WKNavigation *)goBack
> {
>-    auto navigation = _page->goBack();
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->goBack());
> }
> 
> - (WKNavigation *)goForward
> {
>-    auto navigation = _page->goForward();
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->goForward());
> }
> 
> - (WKNavigation *)reload
>@@ -976,20 +952,12 @@ - (WKNavigation *)reload
>     if (linkedOnOrAfter(WebKit::SDKVersion::FirstWithExpiredOnlyReloadBehavior))
>         reloadOptions |= WebCore::ReloadOption::ExpiredOnly;
> 
>-    auto navigation = _page->reload(reloadOptions);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->reload(reloadOptions));
> }
> 
> - (WKNavigation *)reloadFromOrigin
> {
>-    auto navigation = _page->reload(WebCore::ReloadOption::FromOrigin);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->reload(WebCore::ReloadOption::FromOrigin));
> }
> 
> - (void)stopLoading
>@@ -1245,16 +1213,16 @@ - (void)_didInsertAttachment:(NSString *)identifier withSource:(NSString *)sourc
> {
>     id <WKUIDelegatePrivate> uiDelegate = (id <WKUIDelegatePrivate>)self.UIDelegate;
>     if ([uiDelegate respondsToSelector:@selector(_webView:didInsertAttachment:withSource:)])
>-        [uiDelegate _webView:self didInsertAttachment:[wrapper(API::Attachment::create(identifier, *_page).leakRef()) autorelease] withSource:source];
>+        [uiDelegate _webView:self didInsertAttachment:wrapper(API::Attachment::create(identifier, *_page)) withSource:source];
>     else if ([uiDelegate respondsToSelector:@selector(_webView:didInsertAttachment:)])
>-        [uiDelegate _webView:self didInsertAttachment:[wrapper(API::Attachment::create(identifier, *_page).leakRef()) autorelease]];
>+        [uiDelegate _webView:self didInsertAttachment:wrapper(API::Attachment::create(identifier, *_page))];
> }
> 
> - (void)_didRemoveAttachment:(NSString *)identifier
> {
>     id <WKUIDelegatePrivate> uiDelegate = (id <WKUIDelegatePrivate>)self.UIDelegate;
>     if ([uiDelegate respondsToSelector:@selector(_webView:didRemoveAttachment:)])
>-        [uiDelegate _webView:self didRemoveAttachment:[wrapper(API::Attachment::create(identifier, *_page).leakRef()) autorelease]];
>+        [uiDelegate _webView:self didRemoveAttachment:wrapper(API::Attachment::create(identifier, *_page))];
> }
> 
> #endif // ENABLE(ATTACHMENT_ELEMENT)
>@@ -4223,20 +4191,12 @@ - (void)_loadAlternateHTMLString:(NSString *)string baseURL:(NSURL *)baseURL for
> 
> - (WKNavigation *)_loadData:(NSData *)data MIMEType:(NSString *)MIMEType characterEncodingName:(NSString *)characterEncodingName baseURL:(NSURL *)baseURL userData:(id)userData
> {
>-    auto navigation = _page->loadData({ static_cast<const uint8_t*>(data.bytes), data.length }, MIMEType, characterEncodingName, baseURL.absoluteString, WebKit::ObjCObjectGraph::create(userData).ptr());
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->loadData({ static_cast<const uint8_t*>(data.bytes), data.length }, MIMEType, characterEncodingName, baseURL.absoluteString, WebKit::ObjCObjectGraph::create(userData).ptr()));
> }
> 
> - (WKNavigation *)_loadRequest:(NSURLRequest *)request shouldOpenExternalURLs:(BOOL)shouldOpenExternalURLs
> {
>-    auto navigation = _page->loadRequest(request, shouldOpenExternalURLs ? WebCore::ShouldOpenExternalURLsPolicy::ShouldAllow : WebCore::ShouldOpenExternalURLsPolicy::ShouldNotAllow);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->loadRequest(request, shouldOpenExternalURLs ? WebCore::ShouldOpenExternalURLsPolicy::ShouldAllow : WebCore::ShouldOpenExternalURLsPolicy::ShouldNotAllow));
> }
> 
> - (NSArray *)_certificateChain
>@@ -4314,20 +4274,12 @@ - (void)_killWebContentProcess
> 
> - (WKNavigation *)_reloadWithoutContentBlockers
> {
>-    auto navigation = _page->reload(WebCore::ReloadOption::DisableContentBlockers);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->reload(WebCore::ReloadOption::DisableContentBlockers));
> }
> 
> - (WKNavigation *)_reloadExpiredOnly
> {
>-    auto navigation = _page->reload(WebCore::ReloadOption::ExpiredOnly);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->reload(WebCore::ReloadOption::ExpiredOnly));
> }
> 
> - (void)_killWebContentProcessAndResetState
>@@ -4404,15 +4356,13 @@ - (void)_accessibilityDidGetSpeakSelectionContent:(NSString *)content
> 
> - (NSData *)_sessionStateData
> {
>-    WebKit::SessionState sessionState = _page->sessionState();
>-
>     // FIXME: This should not use the legacy session state encoder.
>-    return [wrapper(*WebKit::encodeLegacySessionState(sessionState).leakRef()) autorelease];
>+    return wrapper(WebKit::encodeLegacySessionState(_page->sessionState()));
> }
> 
> - (_WKSessionState *)_sessionState
> {
>-    return adoptNS([[_WKSessionState alloc] _initWithSessionState:_page->sessionState()]).autorelease();
>+    return [[[_WKSessionState alloc] _initWithSessionState:_page->sessionState()] autorelease];
> }
> 
> - (_WKSessionState *)_sessionStateWithFilter:(BOOL (^)(WKBackForwardListItem *item))filter
>@@ -4424,7 +4374,7 @@ - (_WKSessionState *)_sessionStateWithFilter:(BOOL (^)(WKBackForwardListItem *it
>         return (bool)filter(wrapper(item));
>     });
> 
>-    return adoptNS([[_WKSessionState alloc] _initWithSessionState:sessionState]).autorelease();
>+    return [[[_WKSessionState alloc] _initWithSessionState:sessionState] autorelease];
> }
> 
> - (void)_restoreFromSessionStateData:(NSData *)sessionStateData
>@@ -4439,11 +4389,7 @@ - (void)_restoreFromSessionStateData:(NSData *)sessionStateData
> 
> - (WKNavigation *)_restoreSessionState:(_WKSessionState *)sessionState andNavigate:(BOOL)navigate
> {
>-    auto navigation = _page->restoreFromSessionState(sessionState->_sessionState, navigate);
>-    if (!navigation)
>-        return nil;
>-
>-    return [wrapper(*navigation.leakRef()) autorelease];
>+    return wrapper(_page->restoreFromSessionState(sessionState->_sessionState, navigate));
> }
> 
> - (void)_close
>@@ -4463,7 +4409,7 @@ - (_WKAttachment *)_insertAttachmentWithFilename:(NSString *)filename contentTyp
>             capturedHandler(error == WebKit::CallbackBase::Error::None);
>     });
> 
>-    return [wrapper(API::Attachment::create(identifier, *_page).leakRef()) autorelease];
>+    return wrapper(API::Attachment::create(identifier, *_page));
> #else
>     return nil;
> #endif
>@@ -4747,7 +4693,7 @@ - (id <_WKDiagnosticLoggingDelegate>)_diagnosticLoggingDelegate
>     if (!diagnosticLoggingClient)
>         return nil;
> 
>-    return [static_cast<WebKit::DiagnosticLoggingClient&>(*diagnosticLoggingClient).delegate().leakRef() autorelease];
>+    return static_cast<WebKit::DiagnosticLoggingClient&>(*diagnosticLoggingClient).delegate().autorelease();
> }
> 
> - (void)_setDiagnosticLoggingDelegate:(id<_WKDiagnosticLoggingDelegate>)diagnosticLoggingDelegate
>@@ -4761,7 +4707,7 @@ - (void)_setDiagnosticLoggingDelegate:(id<_WKDiagnosticLoggingDelegate>)diagnost
> 
> - (id <_WKFindDelegate>)_findDelegate
> {
>-    return [static_cast<WebKit::FindClient&>(_page->findClient()).delegate().leakRef() autorelease];
>+    return static_cast<WebKit::FindClient&>(_page->findClient()).delegate().autorelease();
> }
> 
> - (void)_setFindDelegate:(id<_WKFindDelegate>)findDelegate
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKWebViewConfiguration.mm b/Source/WebKit/UIProcess/API/Cocoa/WKWebViewConfiguration.mm
>index 8a8052d3f0e7332ca636be7edbbeea2e5e336444..bf187ffcb69fd62463266914ca5248edcf8c0e87 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKWebViewConfiguration.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKWebViewConfiguration.mm
>@@ -849,9 +849,7 @@ - (void)_setControlledByAutomation:(BOOL)controlledByAutomation
> 
> - (_WKApplicationManifest *)_applicationManifest
> {
>-    if (auto* manifest = _pageConfiguration->applicationManifest())
>-        return wrapper(*manifest);
>-    return nil;
>+    return wrapper(_pageConfiguration->applicationManifest());
> }
> 
> - (void)_setApplicationManifest:(_WKApplicationManifest *)applicationManifest
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/WKWebsiteDataStore.mm b/Source/WebKit/UIProcess/API/Cocoa/WKWebsiteDataStore.mm
>index 8252322682ea9a806245cce58685cad942248f18..245e707e26c11b5b8516a55583687ba800dc39a8 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/WKWebsiteDataStore.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/WKWebsiteDataStore.mm
>@@ -48,12 +48,12 @@ @implementation WKWebsiteDataStore
> 
> + (WKWebsiteDataStore *)defaultDataStore
> {
>-    return WebKit::wrapper(API::WebsiteDataStore::defaultDataStore().get());
>+    return wrapper(API::WebsiteDataStore::defaultDataStore());
> }
> 
> + (WKWebsiteDataStore *)nonPersistentDataStore
> {
>-    return [WebKit::wrapper(API::WebsiteDataStore::createNonPersistentDataStore().leakRef()) autorelease];
>+    return wrapper(API::WebsiteDataStore::createNonPersistentDataStore());
> }
> 
> - (void)dealloc
>@@ -112,7 +112,7 @@ + (NSSet *)allWebsiteDataTypes
> 
> - (WKHTTPCookieStore *)httpCookieStore
> {
>-    return WebKit::wrapper(_websiteDataStore->httpCookieStore());
>+    return wrapper(_websiteDataStore->httpCookieStore());
> }
> 
> static WallTime toSystemClockTime(NSDate *date)
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKApplicationManifest.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKApplicationManifest.mm
>index c753503183310d8b7b847aec1d40b4a0d4470fcd..3edd8531a098b04f2437d7de5b8540f3f60ecf72 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKApplicationManifest.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKApplicationManifest.mm
>@@ -84,7 +84,7 @@ - (void)encodeWithCoder:(NSCoder *)aCoder
> + (_WKApplicationManifest *)applicationManifestFromJSON:(NSString *)json manifestURL:(NSURL *)manifestURL documentURL:(NSURL *)documentURL
> {
>     auto manifest = WebCore::ApplicationManifestParser::parse(WTF::String(json), WebCore::URL(manifestURL), WebCore::URL(documentURL));
>-    return [API::wrapper(API::ApplicationManifest::create(manifest).leakRef()) autorelease];
>+    return wrapper(API::ApplicationManifest::create(manifest));
> }
> 
> - (API::Object&)_apiObject
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKGeolocationPosition.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKGeolocationPosition.mm
>index 6f819df147576efe595b897c0db2ddc3347f18d1..e26d1341003afcbf725d0c530e3c1b9aab5f16e0 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKGeolocationPosition.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKGeolocationPosition.mm
>@@ -39,7 +39,7 @@ + (instancetype)positionWithLocation:(CLLocation *)location
>     if (!location)
>         return nil;
> 
>-    return [wrapper(WebGeolocationPosition::create(WebCore::GeolocationPosition { location }).leakRef()) autorelease];
>+    return wrapper(WebGeolocationPosition::create(WebCore::GeolocationPosition { location });
> }
> 
> - (void)dealloc
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm
>index 6f7767b1435b5742840daaaba32f8a2fcc962f42..f2fd5def8cb645e846b58eea560e1d6853d471c1 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm
>@@ -347,7 +347,7 @@ - (NSString *)description
> 
> - (id)copyWithZone:(NSZone *)zone
> {
>-    return wrapper(_processPoolConfiguration->copy().leakRef());
>+    return [wrapper(_processPoolConfiguration->copy()) retain];
> }
> 
> - (NSString *)customWebContentServiceBundleIdentifier
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKUserContentWorld.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKUserContentWorld.mm
>index 4fd17f3532483aa504c8ff5eaaeb3bbba62a43aa..c0ed7f78178297aa38ba11726f5fe7c3afea1e0a 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKUserContentWorld.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKUserContentWorld.mm
>@@ -32,7 +32,7 @@ @implementation _WKUserContentWorld
> 
> + (_WKUserContentWorld *)worldWithName:(NSString *)name
> {
>-    return [wrapper(API::UserContentWorld::worldWithName(name).leakRef()) autorelease];
>+    return wrapper(API::UserContentWorld::worldWithName(name));
> }
> 
> + (_WKUserContentWorld *)normalWorld
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>index 29b73809d398c39881037c66ef2b69c312e11b37..613554b1150a43d110f50fc86f659e64c7ba3217 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>+++ b/Source/WebKit/UIProcess/API/Cocoa/_WKWebsitePolicies.mm
>@@ -175,8 +175,7 @@ - (void)setCustomHeaderFields:(NSDictionary<NSString *, NSString *> *)fields
> 
> - (WKWebsiteDataStore *)websiteDataStore
> {
>-    auto* store = _websitePolicies->websiteDataStore();
>-    return store ? WebKit::wrapper(*store) : nil;
>+    return wrapper(_websitePolicies->websiteDataStore());
> }
> 
> - (void)setWebsiteDataStore:(WKWebsiteDataStore *)websiteDataStore
>diff --git a/Source/WebKit/UIProcess/Cocoa/NavigationState.mm b/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>index 9b5385baa2889d6248ca7fa92d21031a67722267..8f60c3697b1a3dda4aff4fa3480107bb73b92323 100644
>--- a/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>+++ b/Source/WebKit/UIProcess/Cocoa/NavigationState.mm
>@@ -435,7 +435,7 @@ bool NavigationState::NavigationClient::didChangeBackForwardList(WebPageProxy&,
>         for (auto& removedItem : removed)
>             [removedItems addObject:wrapper(removedItem.get())];
>     }
>-    [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView backForwardListItemAdded:added ? wrapper(*added) : nil removed:removedItems];
>+    [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView backForwardListItemAdded:wrapper(added) removed:removedItems];
>     return true;
> }
> 
>@@ -493,8 +493,8 @@ void NavigationState::NavigationClient::decidePolicyForNavigationAction(WebPageP
>                 return;
>             }
> 
>-            RetainPtr<NSURLRequest> nsURLRequest = adoptNS(wrapper(API::URLRequest::create(navigationAction->request()).leakRef()));
>-            if ([NSURLConnection canHandleRequest:nsURLRequest.get()] || webPage->urlSchemeHandlerForScheme([nsURLRequest URL].scheme)) {
>+            NSURLRequest *nsURLRequest = wrapper(API::URLRequest::create(navigationAction->request()));
>+            if ([NSURLConnection canHandleRequest:nsURLRequest] || webPage->urlSchemeHandlerForScheme([nsURLRequest URL].scheme)) {
>                 if (navigationAction->shouldPerformDownload())
>                     listener->download();
>                 else
>@@ -664,14 +664,11 @@ void NavigationState::NavigationClient::didStartProvisionalNavigation(WebPagePro
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>     if (m_navigationState.m_navigationDelegateMethods.webViewDidStartProvisionalNavigationUserInfo)
>-        [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView didStartProvisionalNavigation:wkNavigation userInfo:userInfo ? static_cast<id <NSSecureCoding>>(userInfo->wrapper()) : nil];
>+        [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView didStartProvisionalNavigation:wrapper(navigation) userInfo:userInfo ? static_cast<id <NSSecureCoding>>(userInfo->wrapper()) : nil];
>     else
>-        [navigationDelegate webView:m_navigationState.m_webView didStartProvisionalNavigation:wkNavigation];
>+        [navigationDelegate webView:m_navigationState.m_webView didStartProvisionalNavigation:wrapper(navigation)];
> }
> 
> void NavigationState::NavigationClient::didReceiveServerRedirectForProvisionalNavigation(WebPageProxy& page, API::Navigation* navigation, API::Object*)
>@@ -684,11 +681,8 @@ void NavigationState::NavigationClient::didReceiveServerRedirectForProvisionalNa
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>-    [navigationDelegate webView:m_navigationState.m_webView didReceiveServerRedirectForProvisionalNavigation:wkNavigation];
>+    [navigationDelegate webView:m_navigationState.m_webView didReceiveServerRedirectForProvisionalNavigation:wrapper(navigation)];
> }
> 
> void NavigationState::NavigationClient::willPerformClientRedirect(WebPageProxy& page, const WTF::String& urlString, double delay)
>@@ -735,10 +729,7 @@ static RetainPtr<NSError> createErrorWithRecoveryAttempter(WKWebView *webView, W
> void NavigationState::NavigationClient::didFailProvisionalNavigationWithError(WebPageProxy& page, WebFrameProxy& webFrameProxy, API::Navigation* navigation, const WebCore::ResourceError& error, API::Object*)
> {
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    RetainPtr<WKNavigation> wkNavigation;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
>-    
>+
>     // FIXME: Set the error on the navigation object.
> 
>     if (!m_navigationState.m_navigationDelegateMethods.webViewDidFailProvisionalNavigationWithError)
>@@ -749,16 +740,13 @@ void NavigationState::NavigationClient::didFailProvisionalNavigationWithError(We
>         return;
> 
>     auto errorWithRecoveryAttempter = createErrorWithRecoveryAttempter(m_navigationState.m_webView, webFrameProxy, error);
>-    [navigationDelegate webView:m_navigationState.m_webView didFailProvisionalNavigation:wkNavigation.get() withError:errorWithRecoveryAttempter.get()];
>+    [navigationDelegate webView:m_navigationState.m_webView didFailProvisionalNavigation:wrapper(navigation) withError:errorWithRecoveryAttempter.get()];
> }
> 
> // FIXME: Shouldn't need to pass the WebFrameProxy in here. At most, a FrameHandle.
>-void NavigationState::NavigationClient::didFailProvisionalLoadInSubframeWithError(WebPageProxy& page, WebFrameProxy& webFrameProxy, const SecurityOriginData& securityOrigin, API::Navigation* navigation, const WebCore::ResourceError& error, API::Object*)
>+void NavigationState::NavigationClient::didFailProvisionalLoadInSubframeWithError(WebPageProxy& page, WebFrameProxy& webFrameProxy, const SecurityOriginData& securityOrigin, API::Navigation*, const WebCore::ResourceError& error, API::Object*)
> {
>     // FIXME: We should assert that navigation is not null here, but it's currently null because WebPageProxy::didFailProvisionalLoadForFrame passes null.
>-    RetainPtr<WKNavigation> wkNavigation;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>     if (!m_navigationState.m_navigationDelegateMethods.webViewNavigationDidFailProvisionalLoadInSubframeWithError)
>         return;
>@@ -779,11 +767,8 @@ void NavigationState::NavigationClient::didCommitNavigation(WebPageProxy& page,
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>-    [navigationDelegate webView:m_navigationState.m_webView didCommitNavigation:wkNavigation];
>+    [navigationDelegate webView:m_navigationState.m_webView didCommitNavigation:wrapper(navigation)];
> }
> 
> void NavigationState::NavigationClient::didFinishDocumentLoad(WebPageProxy& page, API::Navigation* navigation, API::Object*)
>@@ -796,11 +781,8 @@ void NavigationState::NavigationClient::didFinishDocumentLoad(WebPageProxy& page
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>-    [static_cast<id <WKNavigationDelegatePrivate>>(navigationDelegate.get()) _webView:m_navigationState.m_webView navigationDidFinishDocumentLoad:wkNavigation];
>+    [static_cast<id <WKNavigationDelegatePrivate>>(navigationDelegate.get()) _webView:m_navigationState.m_webView navigationDidFinishDocumentLoad:wrapper(navigation)];
> }
> 
> void NavigationState::NavigationClient::didFinishNavigation(WebPageProxy& page, API::Navigation* navigation, API::Object*)
>@@ -813,11 +795,8 @@ void NavigationState::NavigationClient::didFinishNavigation(WebPageProxy& page,
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>-    [navigationDelegate webView:m_navigationState.m_webView didFinishNavigation:wkNavigation];
>+    [navigationDelegate webView:m_navigationState.m_webView didFinishNavigation:wrapper(navigation)];
> }
> 
> // FIXME: Shouldn't need to pass the WebFrameProxy in here. At most, a FrameHandle.
>@@ -832,15 +811,12 @@ void NavigationState::NavigationClient::didFailNavigationWithError(WebPageProxy&
>         return;
> 
>     // FIXME: We should assert that navigation is not null here, but it's currently null for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>     auto errorWithRecoveryAttempter = createErrorWithRecoveryAttempter(m_navigationState.m_webView, webFrameProxy, error);
>     if (m_navigationState.m_navigationDelegateMethods.webViewDidFailNavigationWithErrorUserInfo)
>-        [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView didFailNavigation:wkNavigation withError:errorWithRecoveryAttempter.get() userInfo:userInfo ? static_cast<id <NSSecureCoding>>(userInfo->wrapper()) : nil];
>+        [(id <WKNavigationDelegatePrivate>)navigationDelegate _webView:m_navigationState.m_webView didFailNavigation:wrapper(navigation) withError:errorWithRecoveryAttempter.get() userInfo:userInfo ? static_cast<id <NSSecureCoding>>(userInfo->wrapper()) : nil];
>     else
>-        [navigationDelegate webView:m_navigationState.m_webView didFailNavigation:wkNavigation withError:errorWithRecoveryAttempter.get()];
>+        [navigationDelegate webView:m_navigationState.m_webView didFailNavigation:wrapper(navigation) withError:errorWithRecoveryAttempter.get()];
> }
> 
> void NavigationState::NavigationClient::didSameDocumentNavigation(WebPageProxy&, API::Navigation* navigation, SameDocumentNavigationType navigationType, API::Object*)
>@@ -853,11 +829,8 @@ void NavigationState::NavigationClient::didSameDocumentNavigation(WebPageProxy&,
>         return;
> 
>     // FIXME: We should assert that navigationID is not zero here, but it's currently zero for some navigations through the page cache.
>-    WKNavigation *wkNavigation = nil;
>-    if (navigation)
>-        wkNavigation = wrapper(*navigation);
> 
>-    [static_cast<id <WKNavigationDelegatePrivate>>(navigationDelegate.get()) _webView:m_navigationState.m_webView navigation:wkNavigation didSameDocumentNavigation:toWKSameDocumentNavigationType(navigationType)];
>+    [static_cast<id <WKNavigationDelegatePrivate>>(navigationDelegate.get()) _webView:m_navigationState.m_webView navigation:wrapper(navigation) didSameDocumentNavigation:toWKSameDocumentNavigationType(navigationType)];
> }
> 
> void NavigationState::NavigationClient::renderingProgressDidChange(WebPageProxy&, WebCore::LayoutMilestones layoutMilestones)
>diff --git a/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.mm b/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.mm
>index 623ba460a208ab7d736127ceaa84414fca04503d..0459183da00f070312c585f256181b8ce495dc92 100644
>--- a/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.mm
>+++ b/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.mm
>@@ -34,7 +34,7 @@ namespace WebKit {
> RetainPtr<NSData> encodeSessionState(const SessionState& sessionState)
> {
> #if WK_API_ENABLED
>-    return [wrapper(*WebKit::encodeLegacySessionState(sessionState).leakRef()) autorelease];
>+    return wrapper(WebKit::encodeLegacySessionState(sessionState));
> #else
>     return nullptr;
> #endif
>diff --git a/Source/WebKit/UIProcess/mac/WKInspectorViewController.mm b/Source/WebKit/UIProcess/mac/WKInspectorViewController.mm
>index 945214d873620183d54a9c77e171eb59f24559e3..b7014129b2457025d2042a319cda597e7902f6c4 100644
>--- a/Source/WebKit/UIProcess/mac/WKInspectorViewController.mm
>+++ b/Source/WebKit/UIProcess/mac/WKInspectorViewController.mm
>@@ -129,7 +129,7 @@ - (WKWebViewConfiguration *)configuration
>         }
>     }
> 
>-    [configuration setProcessPool: ::WebKit::wrapper(inspectorProcessPool(inspectorLevelForPage(_inspectedPage)))];
>+    [configuration setProcessPool:wrapper(inspectorProcessPool(inspectorLevelForPage(_inspectedPage)))];
>     [configuration _setGroupIdentifier:inspectorPageGroupIdentifierForPage(_inspectedPage)];
> 
>     return configuration.autorelease();
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm
>index 9f483dbcbd5e5413e4e3f96ee23e0784cf5584fc..96adaa94098fa16eec49cf7dbaf48e8a671d1d46 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm
>@@ -52,11 +52,7 @@ @implementation WKWebProcessPlugInFrame {
> 
> + (instancetype)lookUpFrameFromHandle:(_WKFrameHandle *)handle
> {
>-    WebFrame* webFrame = WebProcess::singleton().webFrame(handle._frameID);
>-    if (!webFrame)
>-        return nil;
>-
>-    return wrapper(*webFrame);
>+    return wrapper(WebProcess::singleton().webFrame(handle._frameID));
> }
> 
> - (void)dealloc
>@@ -72,8 +68,7 @@ - (JSContext *)jsContextForWorld:(WKWebProcessPlugInScriptWorld *)world
> 
> - (WKWebProcessPlugInHitTestResult *)hitTest:(CGPoint)point
> {
>-    auto hitTestResult = _frame->hitTest(WebCore::IntPoint(point));
>-    return [wrapper(*hitTestResult.leakRef()) autorelease];
>+    return wrapper(_frame->hitTest(WebCore::IntPoint(point)));
> }
> 
> - (JSValue *)jsNodeForNodeHandle:(WKWebProcessPlugInNodeHandle *)nodeHandle inWorld:(WKWebProcessPlugInScriptWorld *)world
>@@ -100,7 +95,7 @@ - (NSURL *)URL
> 
> - (NSArray *)childFrames
> {
>-    return [wrapper(_frame->childFrames().leakRef()) autorelease];
>+    return wrapper(_frame->childFrames());
> }
> 
> - (BOOL)containsAnyFormElements
>@@ -110,7 +105,7 @@ - (BOOL)containsAnyFormElements
> 
> - (_WKFrameHandle *)handle
> {
>-    return [wrapper(API::FrameHandle::create(_frame->frameID()).leakRef()) autorelease];
>+    return wrapper(API::FrameHandle::create(_frame->frameID()));
> }
> 
> static RetainPtr<NSArray> collectIcons(WebCore::Frame* frame, OptionSet<WebCore::LinkIconType> iconTypes)
>@@ -139,8 +134,7 @@ - (NSArray *)faviconURLs
> 
> - (WKWebProcessPlugInFrame *)_parentFrame
> {
>-    WebFrame *parentFrame = _frame->parentFrame();
>-    return parentFrame ? wrapper(*parentFrame) : nil;
>+    return wrapper(_frame->parentFrame());
> }
> 
> - (BOOL)_hasCustomContentProvider
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm
>index 7ea86c911e4d642e5fc63256243d22a5c1da32f5..020947cfbd0b80d37c9af7c6346a80c2c7254cf8 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm
>@@ -44,8 +44,7 @@ - (void)dealloc
> 
> - (WKWebProcessPlugInNodeHandle *)nodeHandle
> {
>-    auto nodeHandle = _hitTestResult->nodeHandle();
>-    return nodeHandle ? [wrapper(*nodeHandle.leakRef()) autorelease] : nil;
>+    return wrapper(_hitTestResult->nodeHandle());
> }
> 
> #pragma mark WKObject protocol implementation
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm
>index 19744c8e0b493bc14d2fd6583adf1e45de6bd0d1..91cd0c40e4cebc5cbb67e1a7f53abd00b54aa724 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm
>@@ -49,21 +49,13 @@ - (void)dealloc
> + (WKWebProcessPlugInNodeHandle *)nodeHandleWithJSValue:(JSValue *)value inContext:(JSContext *)context
> {
>     JSContextRef contextRef = [context JSGlobalContextRef];
>-    JSObjectRef objectRef = JSValueToObject(contextRef, [value JSValueRef], 0);
>-    auto nodeHandle = InjectedBundleNodeHandle::getOrCreate(contextRef, objectRef);
>-    if (!nodeHandle)
>-        return nil;
>-
>-    return [wrapper(*nodeHandle.leakRef()) autorelease];
>+    JSObjectRef objectRef = JSValueToObject(contextRef, [value JSValueRef], nullptr);
>+    return wrapper(InjectedBundleNodeHandle::getOrCreate(contextRef, objectRef));
> }
> 
> - (WKWebProcessPlugInFrame *)htmlIFrameElementContentFrame
> {
>-    auto frame = _nodeHandle->htmlIFrameElementContentFrame();
>-    if (!frame)
>-        return nil;
>-
>-    return [wrapper(*frame.leakRef()) autorelease];
>+    return wrapper(_nodeHandle->htmlIFrameElementContentFrame());
> }
> 
> #if PLATFORM(IOS)
>@@ -191,16 +183,12 @@ - (BOOL)isTextField
> 
> - (WKWebProcessPlugInNodeHandle *)HTMLTableCellElementCellAbove
> {
>-    auto nodeHandle = _nodeHandle->htmlTableCellElementCellAbove();
>-    if (!nodeHandle)
>-        return nil;
>-
>-    return [wrapper(*nodeHandle.leakRef()) autorelease];
>+    return wrapper(_nodeHandle->htmlTableCellElementCellAbove());
> }
> 
> - (WKWebProcessPlugInFrame *)frame
> {
>-    return [wrapper(*_nodeHandle->document()->documentFrame().leakRef()) autorelease];
>+    return wrapper(_nodeHandle->document()->documentFrame());
> }
> 
> - (InjectedBundleNodeHandle&)_nodeHandle
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm
>index 4fcb1a4468d31cc267a16b2015e2f210cdf01801..4a8dd34359523d739da1f79e49c46b65e2596c5d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm
>@@ -52,17 +52,13 @@ - (void)dealloc
> + (WKWebProcessPlugInRangeHandle *)rangeHandleWithJSValue:(JSValue *)value inContext:(JSContext *)context
> {
>     JSContextRef contextRef = [context JSGlobalContextRef];
>-    JSObjectRef objectRef = JSValueToObject(contextRef, [value JSValueRef], 0);
>-    auto rangeHandle = InjectedBundleRangeHandle::getOrCreate(contextRef, objectRef);
>-    if (!rangeHandle)
>-        return nil;
>-
>-    return [wrapper(*rangeHandle.leakRef()) autorelease];
>+    JSObjectRef objectRef = JSValueToObject(contextRef, [value JSValueRef], nullptr);
>+    return wrapper(InjectedBundleRangeHandle::getOrCreate(contextRef, objectRef));
> }
> 
> - (WKWebProcessPlugInFrame *)frame
> {
>-    return [wrapper(*_rangeHandle->document()->documentFrame().leakRef()) autorelease];
>+    return wrapper(_rangeHandle->document()->documentFrame());
> }
> 
> - (NSString *)text
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm
>index 6eba0129d777494b7b0aa5888044921080e6737b..ae8d9061f4430b2afc98a0a75a3151c70629dd7d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm
>@@ -36,8 +36,7 @@ @implementation WKWebProcessPlugInScriptWorld {
> 
> + (WKWebProcessPlugInScriptWorld *)world
> {
>-    auto scriptWorld = InjectedBundleScriptWorld::create();
>-    return [wrapper(scriptWorld.leakRef()) autorelease];
>+    return wrapper(InjectedBundleScriptWorld::create());
> }
> 
> + (WKWebProcessPlugInScriptWorld *)normalWorld
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm b/Source/WebKit/WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm
>index 1935322f3640e4ed24b91b6e1d2a8261baeed2be..28dc0669df5dd20e0bc1e0667ece9f7e5394c492 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm
>@@ -385,11 +385,7 @@ - (WKDOMRange *)selectedRange
> 
> - (WKWebProcessPlugInFrame *)mainFrame
> {
>-    WebFrame *webKitMainFrame = _page->mainWebFrame();
>-    if (!webKitMainFrame)
>-        return nil;
>-
>-    return wrapper(*webKitMainFrame);
>+    return wrapper(_page->mainWebFrame());
> }
> 
> - (WKWebProcessPlugInPageGroup *)pageGroup
>@@ -420,11 +416,7 @@ - (WKBrowsingContextHandle *)handle
> 
> + (instancetype)lookUpBrowsingContextFromHandle:(WKBrowsingContextHandle *)handle
> {
>-    WebPage* webPage = WebProcess::singleton().webPage(handle.pageID);
>-    if (!webPage)
>-        return nil;
>-
>-    return wrapper(*webPage);
>+    return wrapper(WebProcess::singleton().webPage(handle.pageID));
> }
> 
> - (_WKRemoteObjectRegistry *)_remoteObjectRegistry

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Attachments on bug 188735: 347470 | 347473