ApplicationConnection lifetime management changes.

mandoline/tab/frame_connection.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 MANDOLINE_TAB_FRAME_CONNECTION_H_
 #define MANDOLINE_TAB_FRAME_CONNECTION_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "components/view_manager/public/interfaces/view_manager.mojom.h"
 #include "mandoline/tab/frame_user_data.h"
 #include "mandoline/tab/public/interfaces/frame_tree.mojom.h"
 #include "mojo/services/network/public/interfaces/url_loader.mojom.h"
 
 namespace mojo {
 class ApplicationConnection;
 class ApplicationImpl;
 }
 
 namespace mandoline {
 
 // FrameConnection is a FrameUserData that manages the connection to a
 // particular frame. It is also responsible for obtaining the necessary
 // services from the remote side.
 class FrameConnection : public FrameUserData {
  public:
   FrameConnection();
   ~FrameConnection() override;
 
   void Init(mojo::ApplicationImpl* app,
             mojo::URLRequestPtr request,
             mojo::ViewManagerClientPtr* view_manage_client);
 
   FrameTreeClient* frame_tree_client() { return frame_tree_client_.get(); }
 
   mojo::ApplicationConnection* application_connection() {
-    return application_connection_;
+    return application_connection_.get();
   }
 
  private:
   FrameTreeClientPtr frame_tree_client_;
 
   // TODO(sky): needs to be destroyed when connection lost.
-  mojo::ApplicationConnection* application_connection_;
+  scoped_ptr<mojo::ApplicationConnection> application_connection_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameConnection);
 };
 
 }  // namespace mandoline
 
 #endif  // MANDOLINE_TAB_FRAME_CONNECTION_H_