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

chrome/browser/ui/cocoa/extensions/browser_actions_controller.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_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
+#import "chrome/browser/ui/cocoa/has_weak_browser_pointer.h"
 #include "ui/gfx/geometry/size.h"
 
 class Browser;
 @class BrowserActionButton;
 @class BrowserActionsContainerView;
 @class MenuButton;
 class ToolbarActionsBar;
 @class ToolbarActionsBarBubbleMac;
 class ToolbarActionsBarDelegate;
 
 namespace content {
 class WebContents;
 }
 
 // Sent when the visibility of the Browser Actions changes.
 extern NSString* const kBrowserActionVisibilityChangedNotification;
 
 // Handles state and provides an interface for controlling the Browser Actions
 // container within the Toolbar.
-@interface BrowserActionsController : NSObject<NSMenuDelegate> {
+@interface BrowserActionsController
+    : NSObject<NSMenuDelegate, HasWeakBrowserPointer> {
  @private
   // Reference to the current browser. Weak.
   Browser* browser_;
 
   // The view from Toolbar.xib we'll be rendering our browser actions in. Weak.
   BrowserActionsContainerView* containerView_;
 
   // Array of toolbar action buttons in the correct order for them to be
   // displayed (includes both hidden and visible buttons).
   base::scoped_nsobject<NSMutableArray> buttons_;
@@ skipping 78 matching lines @@
 // Sets whether or not the overflow container is focused in the wrench menu.
 - (void)setFocusedInOverflow:(BOOL)focused;
 
 @end  // @interface BrowserActionsController
 
 @interface BrowserActionsController(TestingAPI)
 - (BrowserActionButton*)buttonWithIndex:(NSUInteger)index;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_