arc-bridge: Introduce the ArcService class

components/arc/ime/arc_ime_ipc_host.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_IPC_HOST_H_
 #define COMPONENTS_ARC_IME_ARC_IME_IPC_HOST_H_
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "components/arc/arc_bridge_service.h"
@@ skipping 17 matching lines @@
 class ArcImeIpcHost : public ImeHost,
                       public ArcBridgeService::Observer {
  public:
   // Received IPCs are deserialized and passed to this delegate.
   class Delegate {
    public:
     virtual void OnTextInputTypeChanged(ui::TextInputType type) = 0;
     virtual void OnCursorRectChanged(const gfx::Rect& rect) = 0;
   };
 
-  ArcImeIpcHost(Delegate* delegate, ArcBridgeService* bridge_service);
+  ArcImeIpcHost(Delegate* delegate, ArcBridgeService* arc_bridge_service);
   ~ArcImeIpcHost() override;
 
   // arc::ArcBridgeService::Observer:
   void OnImeInstanceReady() override;
 
   // Serializes and sends IME related requests through IPCs.
   void SendSetCompositionText(const ui::CompositionText& composition);
   void SendConfirmCompositionText();
   void SendInsertText(const base::string16& text);
 
   // arc::ImeHost:
   void OnTextInputTypeChanged(arc::TextInputType type) override;
   void OnCursorRectChanged(arc::CursorRectPtr rect) override;
 
  private:
+  ArcBridgeService* const arc_bridge_service_;  // owned by ArcServiceManager.
+
   mojo::Binding<ImeHost> binding_;
   Delegate* const delegate_;
-  ArcBridgeService* const bridge_service_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcImeIpcHost);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_IME_ARC_IME_IPC_HOST_H_