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

chrome/browser/ui/cocoa/tabs/tab_strip_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_TABS_TAB_STRIP_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 148 matching lines @@
 // "switched" every time the user switches tabs. The children of this view
 // will be released, so if you want them to stay around, make sure
 // you have retained them.
 // |delegate| is the one listening to filtered TabStripModelObserverBridge's
 // events (see TabStripControllerDelegate for more details).
 - (id)initWithView:(TabStripView*)view
         switchView:(NSView*)switchView
            browser:(Browser*)browser
           delegate:(id<TabStripControllerDelegate>)delegate;
 
+// Called by BrowserWindowController when the Browser is being destroyed.
+- (void)browserWillBeDestroyed;
+
 // Returns the model behind this controller.
 - (TabStripModel*)tabStripModel;
 
 // Returns all tab views.
 - (NSArray*)tabViews;
 
 // Return the view for the currently active tab.
 - (NSView*)activeTabView;
 
 // Find the model index based on the x coordinate of the placeholder. If there
@@ skipping 86 matching lines @@
 - (void)removeCustomWindowControls;
 
 @end
 
 @interface TabStripController(TestingAPI)
 - (void)setTabTitle:(TabController*)tab
        withContents:(content::WebContents*)contents;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TABS_TAB_STRIP_CONTROLLER_H_