Move Sad Tab implementation out of the TabContentsViews.

chrome/browser/automation/automation_tab_helper.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_AUTOMATION_AUTOMATION_TAB_HELPER_H_
 #define CHROME_BROWSER_AUTOMATION_AUTOMATION_TAB_HELPER_H_
 #pragma once
 
 #include <set>
 #include <vector>
@@ skipping 88 matching lines @@
 
  private:
   friend class AutomationTabHelperTest;
 
   void OnSnapshotEntirePageACK(
       bool success,
       const std::vector<unsigned char>& png_data,
       const std::string& error_msg);
 
   // TabContentsObserver implementation.
-  virtual void DidStartLoading();
-  virtual void DidStopLoading();
-  virtual void RenderViewGone();
-  virtual void TabContentsDestroyed(TabContents* tab_contents);
-  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual void DidStartLoading() OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
+  virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
+  virtual void TabContentsDestroyed(TabContents* tab_contents) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   void OnWillPerformClientRedirect(int64 frame_id, double delay_seconds);
   void OnDidCompleteOrCancelClientRedirect(int64 frame_id);
   void OnTabOrRenderViewDestroyed(TabContents* tab_contents);
 
   // True if the tab is currently loading. If a navigation is scheduled but not
   // yet loading, this will be false.
   bool is_loading_;
 
   // Set of all the frames (by frame ID) that are scheduled to perform a client
   // redirect.
   std::set<int64> pending_client_redirects_;
 
   // List of all the |TabEventObserver|s, which we broadcast events to.
   ObserverList<TabEventObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationTabHelper);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_TAB_HELPER_H_