Remove explicit singletonness of ArcBridgeService part 1.

components/arc/arc_session.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 COMPONENTS_ARC_ARC_SESSION_H_
 #define COMPONENTS_ARC_ARC_SESSION_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 26 matching lines @@
     // Called when ARC instance is stopped. This is called exactly once
     // per instance which is Start()ed.
     virtual void OnStopped(ArcBridgeService::StopReason reason) = 0;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Observer);
   };
 
   // Creates a default instance of ArcSession.
   static std::unique_ptr<ArcSession> Create(
+      ArcBridgeService* arc_bridge_service,
       const scoped_refptr<base::TaskRunner>& blocking_task_runner);
   virtual ~ArcSession();
 
   // Starts and bootstraps a connection with the instance. The Observer's
   // OnReady() will be called if the bootstrapping is successful, or
   // OnStopped() if it is not. Start() should not be called twice or more.
   virtual void Start() = 0;
 
   // Requests to stop the currently-running instance.
   // The completion is notified via OnStopped() of the Delegate.
@@ skipping 11 matching lines @@
 
   base::ObserverList<Observer> observer_list_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ArcSession);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_ARC_SESSION_H_