command_buffer: Implement EXT_blend_func_extended

gpu/command_buffer/client/gles2_implementation_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_autogen.h b/gpu/command_buffer/client/gles2_implementation_autogen.h
index 0a4f886da0cd3260af00ff39f5f7c95bee0008a3..10ebcc3491553def4bccff7c38600f2f1609a414 100644
--- a/gpu/command_buffer/client/gles2_implementation_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_autogen.h
@@ -1184,4 +1184,15 @@ void BlendBarrierKHR() override;
 
 void ApplyScreenSpaceAntialiasingCHROMIUM() override;
 
+void BindFragDataLocationIndexedEXT(GLuint program,
+                                    GLuint colorNumber,
+                                    GLuint index,
+                                    const char* name) override;
+
+void BindFragDataLocationEXT(GLuint program,
+                             GLuint colorNumber,
+                             const char* name) override;
+
+GLint GetFragDataIndexEXT(GLuint program, const char* name) override;
+
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_