The EGL context for WebGL content is deleted in the GraphicsContext3D destructor, and then it's used in the destructor for the WebGLLayerWebKitThread.
Created attachment 167820 [details] Patch
Comment on attachment 167820 [details] Patch Clearing flags on attachment: 167820 Committed r130801: <http://trac.webkit.org/changeset/130801>
All reviewed patches have been landed. Closing bug.