Remove declaration for function removed more than half a year ago in r56752.

chrome/browser/ui/browser.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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 920 matching lines @@
 
   // In-progress download termination handling /////////////////////////////////
 
   // Called when the window is closing to check if potential in-progress
   // downloads should prevent it from closing.
   // Returns true if the window can close, false otherwise.
   bool CanCloseWithInProgressDownloads();
 
   // Assorted utility functions ///////////////////////////////////////////////
 
-  // Checks whether |source| is about to navigate across extension extents, and
-  // if so, navigates in the correct window. For example if this is a normal
-  // browser and we're about to navigate into an extent, this method will
-  // navigate the app's window instead. If we're in an app window and
-  // navigating out of the app, this method will find and navigate a normal
-  // browser instead.
-  //
-  // Returns true if the navigation was handled, eg, it was opened in some other
-  // browser.
-  //
-  // Returns false if it was not handled. In this case, the method may also
-  // modify |disposition| to a more suitable value.
-  bool HandleCrossAppNavigation(TabContents* source,
-                                const GURL& url,
-                                const GURL& referrer,
-                                WindowOpenDisposition *disposition,
-                                PageTransition::Type transition);
-
   // Shows the Find Bar, optionally selecting the next entry that matches the
   // existing search string for that Tab. |forward_direction| controls the
   // search direction.
   void FindInPage(bool find_next, bool forward_direction);
 
   // Closes the frame.
   // TODO(beng): figure out if we need this now that the frame itself closes
   //             after a return to the message loop.
   void CloseFrame();
 
@@ skipping 183 matching lines @@
   // and we install ourselves as an observer.
   TabRestoreService* tab_restore_service_;
 
   scoped_ptr<InstantController> instant_;
   scoped_ptr<InstantUnloadHandler> instant_unload_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_