[Webkit-unassigned] [Bug 106842] adding support for DiscardablePixelRef for caching lazily decoded images

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106842





--- Comment #76 from Min Qin <qinmin at chromium.org>  2013-01-25 18:28:07 PST ---
One small change to remove m_firstOnLock, so when allocAndLockDiscardableMemory() is called, we initialize m_lockedMemory.

And when onLockPixels() gets called, we ignore setting m_lockedMemory if it has already been initialized. This should only affect the first onLockPixels as what m_firstOnLock was trying to do.

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