WebGLRenderingContextLostCallback  608 Source/core/html/canvas/WebGLRenderingContextBase.cpp     m_contextLostCallbackAdapter = adoptPtr(new WebGLRenderingContextLostCallback(this));
WebGLRenderingContextLostCallback   94 Source/core/html/canvas/WebGLRenderingContextBase.h class WebGLRenderingContextLostCallback;
WebGLRenderingContextLostCallback  415 Source/core/html/canvas/WebGLRenderingContextBase.h     OwnPtr<WebGLRenderingContextLostCallback> m_contextLostCallbackAdapter;