The m_acceleratesRendering flag on ImageBuffer is no longer needed. Using the flag on the graphics context via isAcceleratedContext and setIsAcceleratedContext is sufficient and cleaner.
Created attachment 107447 [details] Patch
Committed r95174: <http://trac.webkit.org/changeset/95174>
(In reply to comment #2) > Committed r95174: <http://trac.webkit.org/changeset/95174> This broke chromium build, e.g.: http://build.chromium.org/p/chromium.webkit/builders/Webkit%20Win7/builds/7574/steps/compile/logs/stdio >..\platform\graphics\skia\ImageBufferSkia.cpp(103) : error C2039: 'setIsAcceleratedContext' : is not a member of 'WebCore::GraphicsContext' 5> e:\b\build\slave\Webkit_Win7\build\src\third_party\WebKit\Source\WebCore\platform\graphics\GraphicsContext.h(215) : see declaration of 'WebCore::GraphicsContext'