[Mac] Fix bugs in resizing the browser actions area next to the omnibox.

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>
 
 #include <memory>
@@ skipping 42 matching lines @@
   BOOL isOverflow_;
 
   // The bubble that is actively showing, if any.
   ToolbarActionsBarBubbleMac* activeBubble_;
 
   // The index of the currently-focused view in the overflow menu, or -1 if
   // no view is focused.
   NSInteger focusedViewIndex_;
 }
 
+@property(nonatomic) CGFloat maxWidth;
 @property(readonly, nonatomic) BrowserActionsContainerView* containerView;
 @property(readonly, nonatomic) Browser* browser;
 @property(readonly, nonatomic) BOOL isOverflow;
 @property(readonly, nonatomic) ToolbarActionsBarBubbleMac* activeBubble;
 
 // Initializes the controller given the current browser and container view that
 // will hold the browser action buttons. If |mainController| is nil, the created
 // BrowserActionsController will be the main controller; otherwise (if this is
 // for the overflow menu), |mainController| should be controller of the main bar
 // for the |browser|.
@@ skipping 35 matching lines @@
 // Returns the size for the provided |maxWidth| of the overflow menu.
 - (gfx::Size)sizeForOverflowWidth:(int)maxWidth;
 
 @end  // @interface BrowserActionsController
 
 @interface BrowserActionsController(TestingAPI)
 - (BrowserActionButton*)buttonWithIndex:(NSUInteger)index;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_