Remove TabContents from TabStripModelObserver::ActiveTabChanged.

chrome/browser/ui/browser_instant_controller.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_BROWSER_INSTANT_CONTROLLER_H_
 #define CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 49 matching lines @@
 
   // Invoked by |instant_| to get the currently active tab, over which the
   // preview would be shown.
   TabContents* GetActiveTabContents() const;
 
   // Overridden from PrefObserver:
   virtual void OnPreferenceChanged(PrefServiceBase* service,
                                    const std::string& pref_name) OVERRIDE;
 
   // Overridden from TabStripModelObserver:
-  virtual void ActiveTabChanged(TabContents* old_contents,
-                                TabContents* new_contents,
+  virtual void ActiveTabChanged(content::WebContents* old_contents,
+                                content::WebContents* new_contents,
                                 int index,
                                 bool user_gesture) OVERRIDE;
 
   // Overridden from search::SearchModelObserver:
   virtual void ModeChanged(const search::Mode& old_mode,
                            const search::Mode& new_mode) OVERRIDE;
 
   // If this browser should have Instant, a new InstantController created;
   // otherwise any existing InstantController is destroyed.
   void ResetInstant();
 
   Browser* browser_;
 
   scoped_ptr<InstantController> instant_;
   InstantUnloadHandler instant_unload_handler_;
 
   PrefChangeRegistrar profile_pref_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserInstantController);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_INSTANT_CONTROLLER_H_