Created attachment 346437 [details]
Patch

Comment on attachment 346437 [details]
Patch

Attachment 346437 [details] did not pass win-ews (win):
Output: https://webkit-queues.webkit.org/results/8749373

New failing tests:
http/tests/security/video-poster-cross-origin-crash2.html

Created attachment 346476 [details]
Archive of layout-test-results from ews200 for win-future

The attached test failures were seen while running run-webkit-tests on the win-ews.
Bot: ews200  Port: win-future  Platform: CYGWIN_NT-6.1-2.9.0-0.318-5-3-x86_64-64bit

Created attachment 346501 [details]
Patch

Created attachment 346506 [details]
Patch

Comment on attachment 346506 [details]
Patch

Have you tried testing by using the Objective-C runtime to replace [SSBLookupContext sharedLookupContext] with an object of your choosing at runtime? Seems less invasive and doesn’t require any changes to production code.

Comment on attachment 346506 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=346506&action=review

> Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm:5875
> +        handler.get()(url, BlockPtr<void(BOOL)>::fromCallable([completionHandler = WTFMove(completionHandler)] (BOOL phishing) mutable {

should this be "isUnsafe" or something?

> Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm:5876
> +            completionHandler({{ "MockSafeBrowsingProvider"_s, !!phishing, false, false, false }});

why the !!

(In reply to mitz from comment #6)
> Comment on attachment 346506 [details]
> Patch
> 
> Have you tried testing by using the Objective-C runtime to replace
> [SSBLookupContext sharedLookupContext] with an object of your choosing at
> runtime? Seems less invasive and doesn’t require any changes to production
> code.
That's a great idea.  Then I wouldn't need any of this!

(In reply to Tim Horton from comment #7)
> Comment on attachment 346506 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=346506&action=review
> 
> > Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm:5875
> > +        handler.get()(url, BlockPtr<void(BOOL)>::fromCallable([completionHandler = WTFMove(completionHandler)] (BOOL phishing) mutable {
> 
> should this be "isUnsafe" or something?
isPhishing

> > Source/WebKit/UIProcess/API/Cocoa/WKWebView.mm:5876
> > +            completionHandler({{ "MockSafeBrowsingProvider"_s, !!phishing, false, false, false }});
> 
> why the !!
This is needed to convert BOOL to bool.

Created attachment 346739 [details]
Patch

Comment on attachment 346739 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=346739&action=review

r=me with comment.

> Tools/TestWebKitAPI/Tests/WebKitCocoa/SafeBrowsing.mm:136
> +    static NeverDestroyed<RetainPtr<TestLookupContext>> context;

Why NeverDestroyed with a RetainPtr? Why not the following?
static TestLookupContext *context = [[TestLookupContext alloc] init];
return context;

http://trac.webkit.org/r234676

<rdar://problem/43025805>