TabContentsWrapper -> TabContents, part 1.

chrome/browser/ui/tabs/tab_strip_model_observer.h

 // Copyright (c) 2012 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_TABS_TAB_STRIP_MODEL_OBSERVER_H_
 #define CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_OBSERVER_H_
 #pragma once
 
-class TabContentsWrapper;
+class TabContents;
+typedef TabContents TabContentsWrapper;
 class TabStripModel;
 class TabStripSelectionModel;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // TabStripModelObserver
 //
 //  Objects implement this interface when they wish to be notified of changes
 //  to the TabStripModel.
 //
@@ skipping 113 matching lines @@
 
   // Invoked when an active/selected tab at |index| is selected again (ie - the
   // active/foreground tab is clicked).
   virtual void ActiveTabClicked(int index);
 
  protected:
   virtual ~TabStripModelObserver() {}
 };
 
 #endif  // CHROME_BROWSER_UI_TABS_TAB_STRIP_MODEL_OBSERVER_H_