In GraphicsLayerCA::setAcceleratesDrawing it has noteLayerPropertyChanged(DrawsContentChanged); but should be noteLayerPropertyChanged(AcceleratedDrawingchanged);
Created attachment 77369 [details] Patch
Committed r74579: <http://trac.webkit.org/changeset/74579>
http://trac.webkit.org/changeset/74579 might have broken GTK Linux 64-bit Debug The following tests are not passing: editing/selection/extend-by-character-004.html