arc-bridge: Introduce the ArcService class

components/arc/ime/arc_ime_bridge.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 COMPONENTS_ARC_IME_ARC_IME_BRIDGE_H_
 #define COMPONENTS_ARC_IME_ARC_IME_BRIDGE_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "components/arc/arc_service.h"
 #include "components/arc/ime/arc_ime_ipc_host.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/base/ime/text_input_flags.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class InputMethod;
 }
 
 namespace arc {
 
 class ArcBridgeService;
 
 // This class implements ui::TextInputClient and makes ARC windows behave
 // as a text input target in Chrome OS environment.
-class ArcImeBridge : public ArcImeIpcHost::Delegate,
+class ArcImeBridge : public ArcService,
+                     public ArcImeIpcHost::Delegate,
                      public aura::EnvObserver,
                      public aura::WindowObserver,
                      public aura::client::FocusChangeObserver,
                      public ui::TextInputClient {
  public:
-  explicit ArcImeBridge(ArcBridgeService* arc_bridge_service);
+  explicit ArcImeBridge(ArcBridgeService* bridge_service);
   ~ArcImeBridge() override;
 
   // Injects the custom IPC host object for testing purpose only.
   void SetIpcHostForTesting(scoped_ptr<ArcImeIpcHost> test_ipc_host);
 
   // Overridden from aura::EnvObserver:
   void OnWindowInitialized(aura::Window* new_window) override;
 
   // Overridden from aura::WindowObserver:
   void OnWindowAddedToRootWindow(aura::Window* window) override;
@@ skipping 50 matching lines @@
   aura::WindowTracker observing_root_windows_;
   aura::WindowTracker arc_windows_;
   aura::WindowTracker focused_arc_window_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcImeBridge);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_IME_ARC_IME_BRIDGE_H_