[Webkit-unassigned] [Bug 72179] New: Make sure JSC and V8 wrappers for TextTrack and TextTrackCue aren't collected on event dispatch when parent/owner are still reachable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=72179

           Summary: Make sure JSC and V8 wrappers for TextTrack and
                    TextTrackCue aren't collected on event dispatch when
                    parent/owner are still reachable
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: annacc at chromium.org
            Blocks: 43668


According to eric.carlson:
Every non-DOM object that is an EventTarget needs code (for JSC at lease, I don't know about V8) to make sure that the wrapper isn't collected during event dispatch or while the parent/owner object is reachable. For example, see JSTextTrackListOwner::isReachableFromOpaqueRoots and the tracklist-is-reachable.html test added in https://bugs.webkit.org/show_bug.cgi?id=71123.

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