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

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_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_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 #include <map>
 
@@ skipping 288 matching lines @@
          initialWidth:(CGFloat)initialWidth
              delegate:(id<BookmarkBarControllerDelegate>)delegate
        resizeDelegate:(id<ViewResizer>)resizeDelegate;
 
 // The Browser corresponding to this BookmarkBarController.
 - (Browser*)browser;
 
 // The controller for all bookmark bar context menus.
 - (BookmarkContextMenuCocoaController*)menuController;
 
+// Called by BrowserWindowController when the Browser is being destroyed.
+- (void)browserWillBeDestroyed;
+
 // Updates the bookmark bar (from its current, possibly in-transition) state to
 // the new state.
 - (void)updateState:(BookmarkBar::State)newState
          changeType:(BookmarkBar::AnimateChangeType)changeType;
 
 // Update the visible state of the bookmark bar.
 - (void)updateVisibility;
 
 // Update the visible state of the extra buttons on the bookmark bar: the
 // apps shortcut, the managed bookmarks folder, and the supervised bookmarks
@@ skipping 103 matching lines @@
 - (BookmarkButton*)buttonForDroppingOnAtPoint:(NSPoint)point;
 - (BOOL)isEventAnExitEvent:(NSEvent*)event;
 - (BOOL)shrinkOrHideView:(NSView*)view forMaxX:(CGFloat)maxViewX;
 - (void)unhighlightBookmark:(const bookmarks::BookmarkNode*)node;
 
 // The following are for testing purposes only and are not used internally.
 - (NSMenu *)menuForFolderNode:(const bookmarks::BookmarkNode*)node;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_CONTROLLER_H_