NEW 108296
Coordinated Graphics: Remove m_releasedImageBackings in CoordinatedGraphicsScene. 
https://bugs.webkit.org/show_bug.cgi?id=108296
Summary Coordinated Graphics: Remove m_releasedImageBackings in CoordinatedGraphicsSc...
Dongseong Hwang
Reported 2013-01-29 22:23:09 PST
Currently, m_releasedCoordinatedBackingStores guarantees that TextureMapperLayer does not refer a dangling pointer of a platform layer and a backing store. However, now TextureMapperScene executes all operations at the time to flush, and the time gap between setting a platform layer and using the platform layer disappears, so we don't need m_releasedCoordinatedBackingStores anymore.
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