[Mac] Inform reference counted objects that hold a weak Browser* when the Browser is being destroye…

chrome/browser/ui/cocoa/tab_contents/overlayable_contents_controller.h

 // Copyright 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_TAB_CONTENTS_OVERLAYABLE_CONTENTS_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_OVERLAYABLE_CONTENTS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
-
-class Browser;
-
-namespace content {
-class WebContents;
-}
 
 // OverlayableContentsController is an obsolete wrapper holding the view where a
 // tab's WebContents is displayed. In the old Chrome Instant implementation it
 // multiplexed between the tab's contents and an overlay's contents. Now there
 // is no overlay, but ripping this class out entirely is hard.
 //
 // TODO(sail): Remove this class and replace it with something saner.
 @interface OverlayableContentsController : NSViewController {
  @private
   // Container view for the "active" contents.
   base::scoped_nsobject<NSView> activeContainer_;
 }
 
 @property(readonly, nonatomic) NSView* activeContainer;
 
-// Initialization.
-- (id)initWithBrowser:(Browser*)browser;
-
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_OVERLAYABLE_CONTENTS_CONTROLLER_H_