mus: Rename GpuService to Gpu.

ui/views/mus/mus_client.h

 // Copyright 2016 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 UI_VIEWS_MUS_MUS_CLIENT_H_
 #define UI_VIEWS_MUS_MUS_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 17 matching lines @@
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace service_manager {
 class Connector;
 class Identity;
 }
 
 namespace ui {
-class GpuService;
+class Gpu;
 }
 
 namespace wm {
 class WMState;
 }
 
 namespace views {
 
 class MusClientObserver;
 class PointerWatcherEventRouter2;
@@ skipping 82 matching lines @@
   base::ObserverList<MusClientObserver> observer_list_;
 
   std::unique_ptr<wm::WMState> wm_state_;
 
   std::unique_ptr<ScreenMus> screen_;
 
   std::unique_ptr<aura::PropertyConverter> property_converter_;
 
   std::unique_ptr<aura::WindowTreeClient> window_tree_client_;
 
-  std::unique_ptr<ui::GpuService> gpu_service_;
+  std::unique_ptr<ui::Gpu> gpu_;
 
   std::unique_ptr<PointerWatcherEventRouter2> pointer_watcher_event_router_;
 
   std::unique_ptr<aura::MusContextFactory> compositor_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MusClient);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_MUS_MUS_CLIENT_H_