mac: Refactor browser_window_controller layout logic.

chrome/browser/ui/cocoa/infobars/infobar_container_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_INFOBARS_INFOBAR_CONTAINER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_CONTAINER_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 40 matching lines @@
   base::scoped_nsobject<NSMutableArray> infobarControllers_;
 
   // The C++ instance that bridges to the cross platform code.
   scoped_ptr<InfoBarContainerCocoa> containerCocoa_;
 
   // If YES then the first info bar doesn't draw a tip.
   BOOL shouldSuppressTopInfoBarTip_;
 
   // If YES then an infobar animation is in progress.
   BOOL isAnimating_;
-
-  // The last overlap tip height. This is used to ensure that the info bar
-  // position is updated if the infobar height doesn't change but the overlap
-  // does change.
-  int oldOverlappingTipHeight_;
 }
 
 @property(nonatomic, assign) BOOL shouldSuppressTopInfoBarTip;
 
 - (id)initWithResizeDelegate:(id<ViewResizer>)resizeDelegate;
 
 // Modifies this container to display infobars for the given |contents|.
 - (void)changeWebContents:(content::WebContents*)contents;
 
 // Stripped down version of TabStripModelObserverBridge:tabDetachedWithContents.
@@ skipping 12 matching lines @@
 // Removes the given infobar.
 - (void)removeInfoBar:(InfoBarCocoa*)infobar;
 
 // Positions the infobar views in the container view and notifies
 // |browser_controller_| that it needs to resize the container view.
 - (void)positionInfoBarsAndRedraw:(BOOL)isAnimating;
 
 // Set the max arrow height of the top infobar.
 - (void)setMaxTopArrowHeight:(NSInteger)height;
 
+// The height of all the info bars. Does not include the top arrow.
+- (CGFloat)heightOfInfoBars;
+
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_CONTAINER_CONTROLLER_H_