[Webkit-unassigned] [Bug 72149] New: [chromium] failing media/track/tracklist-is-reachable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=72149

           Summary: [chromium] failing media/track/tracklist-is-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: tonyg at chromium.org
                CC: eric.carlson at apple.com


Chromium fails the media/track/tracklist-is-reachable test which was introduced by r99984.

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=media%2Ftrack%2Ftracklist-is-reachable.html

Apparently V8 doesn't allow us to set expando properties on non-DOM objects that are also EventTargets. Eric Carlson informs me the JSC code for this is in JSTextTrackListOwner::isReachableFromOpaqueRoots

We probably need to do something similar.

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