validateBlendFuncFactors 1149 Source/core/html/canvas/WebGLRenderingContextBase.cpp     if (isContextLost() || !validateBlendFuncFactors("blendFunc", sfactor, dfactor))
validateBlendFuncFactors 1157 Source/core/html/canvas/WebGLRenderingContextBase.cpp     if (isContextLost() || !validateBlendFuncFactors("blendFuncSeparate", srcRGB, dstRGB))
validateBlendFuncFactors  806 Source/core/html/canvas/WebGLRenderingContextBase.h     bool validateBlendFuncFactors(const char* functionName, GLenum src, GLenum dst);