[Webkit-unassigned] [Bug 173628] New: [mac-wk1] requestAnimationFrame callbacks may not get serviced

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173628

            Bug ID: 173628
           Summary: [mac-wk1] requestAnimationFrame callbacks may not get
                    serviced
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: graouts at apple.com
                CC: lforschler at apple.com

As we found in https://bugs.webkit.org/show_bug.cgi?id=168409, and in other flaky tests, we have an issue where some media/modern-media-controls tests time out due to requestAnimationFrame callbacks not being serviced. We added some logging to identify when ScriptedAnimationController would get suspended in webkit.org/b/173326. This logging points to the fact that the reason rAF callbacks aren't serviced is because Document::requestAnimationFrame() suspends rAF when the page reports that scripted animations ought to be suspended, which is true when m_scriptedAnimationsSuspended is true. We are adding more logging to track this with https://bugs.webkit.org/show_bug.cgi?id=173626. This bug tracks the general issue until it is fixed.

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