WebUI TaskManager: Add "Activate page" feature.

chrome/browser/ui/webui/task_manager_handler.h

 // Copyright (c) 2011 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_UI_WEBUI_TASK_MANAGER_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_TASK_MANAGER_HANDLER_H_
 #pragma once
 
 #include <vector>
 #include "content/browser/webui/web_ui.h"
@@ skipping 20 matching lines @@
   virtual void OnItemsAdded(int start, int length) OVERRIDE;
   // Invoked when a range of items has been removed.
   virtual void OnItemsRemoved(int start, int length) OVERRIDE;
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Callback for the "killProcess" message.
   void HandleKillProcess(const base::ListValue* indexes);
 
+  // Callback for the "activatePage" message.
+  void HandleActivatePage(const base::ListValue* resource_index);
+
   // Callback for the "inspect" message.
   void HandleInspect(const base::ListValue* resource_index);
 
   void EnableTaskManager(const base::ListValue* indexes);
   void DisableTaskManager(const base::ListValue* indexes);
   void OpenAboutMemory(const base::ListValue* indexes);
 
  private:
   bool is_alive();
 
@@ skipping 12 matching lines @@
   void OnGroupChanged(int start, int length);
   void OnGroupRemoved(int start, int length);
 
   // Updates |resource_to_group_table_|.
   void UpdateResourceGroupTable(int start, int length);
 
   DISALLOW_COPY_AND_ASSIGN(TaskManagerHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_TASK_MANAGER_HANDLER_H_