command_buffer: Implement CHROMIUM_framebuffer_mixed_samples extension

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 8cb59a9cdbecfa6f6fd149df421a4cc62f2f43af..9cfdd159165098d92c69c1c6324a9b5faf6ba886 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -1695,6 +1695,9 @@ GLES2ProgramPathFragmentInputGenCHROMIUM(GLuint program,
   gles2::GetGLContext()->ProgramPathFragmentInputGenCHROMIUM(
       program, location, genMode, components, coeffs);
 }
+void GL_APIENTRY GLES2CoverageModulationCHROMIUM(GLenum components) {
+  gles2::GetGLContext()->CoverageModulationCHROMIUM(components);
+}
 GLenum GL_APIENTRY GLES2GetGraphicsResetStatusKHR() {
   return gles2::GetGLContext()->GetGraphicsResetStatusKHR();
 }
@@ -2996,6 +2999,10 @@ extern const NameToFunc g_gles2_function_table[] = {
             glProgramPathFragmentInputGenCHROMIUM),
     },
     {
+        "glCoverageModulationCHROMIUM",
+        reinterpret_cast<GLES2FunctionPointer>(glCoverageModulationCHROMIUM),
+    },
+    {
         "glGetGraphicsResetStatusKHR",
         reinterpret_cast<GLES2FunctionPointer>(glGetGraphicsResetStatusKHR),
     },