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;