mus: Use ui::ContextProviderCommandBuffer.

services/ui/public/cpp/gpu/command_buffer_metrics.h

 // 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.
 
 #ifndef SERVICES_UI_PUBLIC_CPP_GPU_COMMAND_BUFFER_METRICS_H_
 #define SERVICES_UI_PUBLIC_CPP_GPU_COMMAND_BUFFER_METRICS_H_
 
 #include <string>
 
 #include "gpu/command_buffer/common/constants.h"
 
 namespace ui {
 namespace command_buffer_metrics {
 
 enum ContextType {
   DISPLAY_COMPOSITOR_ONSCREEN_CONTEXT,
   BROWSER_OFFSCREEN_MAINTHREAD_CONTEXT,
   BROWSER_WORKER_CONTEXT,
   RENDER_COMPOSITOR_CONTEXT,
   RENDER_WORKER_CONTEXT,
   RENDERER_MAINTHREAD_CONTEXT,
   GPU_VIDEO_ACCELERATOR_CONTEXT,
   OFFSCREEN_VIDEO_CAPTURE_CONTEXT,
   OFFSCREEN_CONTEXT_FOR_WEBGL,
   CONTEXT_TYPE_UNKNOWN,
   MEDIA_CONTEXT,
   BLIMP_RENDER_COMPOSITOR_CONTEXT,
   BLIMP_RENDER_WORKER_CONTEXT,
+  MUS_CLIENT_CONTEXT,
   OFFSCREEN_CONTEXT_FOR_TESTING = CONTEXT_TYPE_UNKNOWN,
 };
 
 std::string ContextTypeToString(ContextType type);
 
 void UmaRecordContextInitFailed(ContextType type);
 
 void UmaRecordContextLost(ContextType type,
                           gpu::error::Error error,
                           gpu::error::ContextLostReason reason);
 
 }  // namespace command_buffer_metrics
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_GPU_COMMAND_BUFFER_METRICS_H_