[Webkit-unassigned] [Bug 195322] REGRESSION(r236862): early frame decoupling leaves JSC ArrayBuffer objects lingering

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=195322

--- Comment #6 from Zan Dobersek <zan at falconsigh.net> ---
The problem seems to be a lack of call to InspectorInstrumentation::frameWindowDiscarded(). Before r236862 this was called from Frame::willDetachPage(), through the FrameDestructionObserver interface.
http://trac.webkit.org/browser/webkit/trunk/Source/WebCore/page/DOMWindow.cpp?rev=236862#L484

Starting in r236862 this was not being called anymore because DOMWindow was already decoupled from Frame when Frame::willDetachPage() was invoked and subsequently the m_destructionObservers set was empty.

The situation in trunk is similar, only difference is that after further refactoring the InspectorInstrumentation::frameWindowDiscarded() is now placed in Document::willDetachPage().

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