validateDrawMode 5164 Source/core/html/canvas/WebGLRenderingContextBase.cpp if (isContextLost() || !validateDrawMode(functionName, mode)) validateDrawMode 5195 Source/core/html/canvas/WebGLRenderingContextBase.cpp if (isContextLost() || !validateDrawMode(functionName, mode)) validateDrawMode 780 Source/core/html/canvas/WebGLRenderingContextBase.h bool validateDrawMode(const char* functionName, GLenum);