Add ContextProvider::InvalidateGrContext to reset GL state in GrContext

components/surfaces/context_provider_mojo.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/surfaces/context_provider_mojo.h"
 
 #include "base/logging.h"
 #include "third_party/mojo/src/mojo/public/cpp/environment/environment.h"
 
 namespace mojo {
@@ skipping 25 matching lines @@
   if (!context_)
     return nullptr;
   return static_cast<gpu::ContextSupport*>(
       MojoGLES2GetContextSupport(context_));
 }
 
 class GrContext* ContextProviderMojo::GrContext() {
   return NULL;
 }
 
+void ContextProviderMojo::InvalidateGrContext(uint32_t state) {
+}
+
 cc::ContextProvider::Capabilities ContextProviderMojo::ContextCapabilities() {
   return capabilities_;
 }
 
 void ContextProviderMojo::SetupLock() {
 }
 
 base::Lock* ContextProviderMojo::GetLock() {
   return &context_lock_;
 }
@@ skipping 15 matching lines @@
     MojoGLES2DestroyContext(context_);
 }
 
 void ContextProviderMojo::ContextLost() {
   context_lost_ = true;
   if (!lost_context_callback_.is_null())
     lost_context_callback_.Run();
 }
 
 }  // namespace mojo