[Webkit-unassigned] [Bug 128532] New: [MSE] Move PublicURLManager shutdown logic so ActiveDOMObjects associated with public URLs won't leak.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=128532

           Summary: [MSE] Move PublicURLManager shutdown logic so
                    ActiveDOMObjects associated with public URLs won't
                    leak.
           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: sun.shin at lge.com


Converted PublicURLManager to an ActiveDOMObject so that it 
will release all of its references when all other 
ActiveDOMObjects are stopped. This prevents ActiveDOMObjects
that can be associate with public URLs, like 
WebKitMediaSource, from getting leaked. Shutting down 
earlier allows these objects to release their pending 
activity so V8 can garbage collect their wrappers. When the
wrappers get cleaned up the Document is then able to be 
destroyed.

Merged from Blink: https://src.chromium.org/viewvc/blink?view=rev&revision=151890

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