Revert 56423 - Added classes to enable session sync functionality....

chrome/browser/dom_ui/foreign_session_handler.h

-// Copyright (c) 2010 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 CHROME_BROWSER_DOM_UI_FOREIGN_SESSION_HANDLER_H_
-#define CHROME_BROWSER_DOM_UI_FOREIGN_SESSION_HANDLER_H_
-#pragma once
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "chrome/browser/dom_ui/dom_ui.h"
-#include "chrome/browser/sessions/session_service.h"
-#include "chrome/browser/sync/glue/session_model_associator.h"
-#include "chrome/common/notification_observer.h"
-#include "chrome/common/notification_registrar.h"
-
-namespace browser_sync {
-
-class ForeignSessionHandler : public DOMMessageHandler,
-                              public NotificationObserver {
- public:
-  // DOMMessageHandler implementation.
-  virtual void RegisterMessages();
-
-  ForeignSessionHandler();
-  virtual ~ForeignSessionHandler() {}
-
- private:
-  // Used to register ForeignSessionHandler for notifications.
-  void Init();
-
-  // Determines how ForeignSessionHandler will interact with the new tab page.
-  void Observe(NotificationType type, const NotificationSource& source,
-               const NotificationDetails& details);
-
-  // Returns a pointer to the current session model associator or NULL.
-  SessionModelAssociator* GetModelAssociator();
-
-  // Determines whether foreign sessions should be obtained from the sync model.
-  // This is a javascript callback handler, and it is also called when the sync
-  // model has changed and the new tab page needs to reflect the changes.
-  void HandleGetForeignSessions(const Value* content);
-
-  // Helper for reopening a foreign session in a new browser window.
-  void OpenForeignSession(SessionModelAssociator* associator, int64 id);
-
-  // Helper for listing the foreign sessions on the new tab page.
-  void GetForeignSessions(SessionModelAssociator* associator);
-
-  // Determines which session is to be opened, and then calls
-  // OpenForeignSession, to begin the process of opening a new browser window.
-  // This is a javascript callback handler.
-  void HandleReopenForeignSession(const Value* content);
-
-  // The Registrar used to register ForeignSessionHandler for notifications.
-  NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(ForeignSessionHandler);
-};
-
-}  // namespace browser_sync
-
-#endif  // CHROME_BROWSER_DOM_UI_FOREIGN_SESSION_HANDLER_H_
-