Remove TabContents from TabStripModelObserver::TabReplacedAt.

chrome/browser/ui/cocoa/tabs/tab_strip_model_observer_bridge.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_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
 #define CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/compiler_specific.h"
@@ skipping 29 matching lines @@
                                 content::WebContents* new_contents,
                                 int index,
                                 bool user_gesture) OVERRIDE;
   virtual void TabMoved(content::WebContents* contents,
                         int from_index,
                         int to_index) OVERRIDE;
   virtual void TabChangedAt(content::WebContents* contents,
                             int index,
                             TabChangeType change_type) OVERRIDE;
   virtual void TabReplacedAt(TabStripModel* tab_strip_model,
-                             TabContents* old_contents,
-                             TabContents* new_contents,
+                             content::WebContents* old_contents,
+                             content::WebContents* new_contents,
                              int index) OVERRIDE;
   virtual void TabMiniStateChanged(content::WebContents* contents,
                                    int index) OVERRIDE;
   virtual void TabStripEmpty() OVERRIDE;
   virtual void TabStripModelDeleted() OVERRIDE;
 
  private:
   id controller_;  // weak, owns me
   TabStripModel* model_;  // weak, owned by Browser
 };
@@ skipping 22 matching lines @@
 - (void)tabReplacedWithContents:(content::WebContents*)newContents
                previousContents:(content::WebContents*)oldContents
                         atIndex:(NSInteger)index;
 - (void)tabMiniStateChangedWithContents:(content::WebContents*)contents
                                 atIndex:(NSInteger)index;
 - (void)tabStripEmpty;
 - (void)tabStripModelDeleted;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_MODEL_OBSERVER_BRIDGE_H_