Make lost context and error message callbacks on GpuControl go to client

components/mus/gles2/command_buffer_local.cc

 // Copyright 2015 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/mus/gles2/command_buffer_local.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 198 matching lines @@
 }
 
 void CommandBufferLocal::DestroyTransferBuffer(int32_t id) {
   DCHECK(CalledOnValidThread());
   gpu_state_->command_buffer_task_runner()->PostTask(
       driver_.get(),
       base::Bind(&CommandBufferLocal::DestroyTransferBufferOnGpuThread,
                  base::Unretained(this), id));
 }
 
+void CommandBufferLocal::SetGpuControlClient(gpu::GpuControlClient*) {
+  // This implementation of GpuControl has no concept of losing the context
+  // (see IsGpuChannelLost), and no error messages, so we don't bother storing
+  // the client.
+}
+
 gpu::Capabilities CommandBufferLocal::GetCapabilities() {
   DCHECK(CalledOnValidThread());
   return capabilities_;
 }
 
 int32_t CommandBufferLocal::CreateImage(ClientBuffer buffer,
                                         size_t width,
                                         size_t height,
                                         unsigned internal_format) {
   DCHECK(CalledOnValidThread());
@@ skipping 322 matching lines @@
     client_->UpdateVSyncParameters(timebase, interval);
 }
 
 void CommandBufferLocal::OnGpuCompletedSwapBuffersOnClientThread(
     gfx::SwapResult result) {
   if (client_)
     client_->GpuCompletedSwapBuffers(result);
 }
 
 }  // namespace mus