Add support for replace infobar. The lack of this was a top mac crasher....

chrome/browser/cocoa/infobar_container_controller.h

 // Copyright (c) 2009 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/scoped_nsobject.h"
 #include "base/scoped_ptr.h"
 #import "chrome/browser/cocoa/view_resizer.h"
 #include "chrome/common/notification_registrar.h"
@@ skipping 46 matching lines @@
 @interface InfoBarContainerController (ForTheObserverAndTesting)
 
 // Adds an infobar view for the given delegate.  Callers must call
 // positionInfoBarsAndRedraw after calling this method.
 - (void)addInfoBar:(InfoBarDelegate*)delegate;
 
 // Removes all the infobar views for a given delegate.  Callers must
 // call positionInfoBarsAndRedraw after calling this method.
 - (void)removeInfoBarsForDelegate:(InfoBarDelegate*)delegate;
 
+// Replaces all info bars for the delegate with a new info bar.
+// This simply calls removeInfoBarsForDelegate: and then addInfoBar:.
+- (void)replaceInfoBarsForDelegate:(InfoBarDelegate*)old_delegate
+                              with:(InfoBarDelegate*)new_delegate;
+
 // Positions the infobar views in the container view and notifies
 // |browser_controller_| that it needs to resize the container view.
 - (void)positionInfoBarsAndRedraw;
 
 @end
 
 
 @interface InfoBarContainerController (JustForTesting)
 
 // Removes all infobar views.  Callers must call
 // positionInfoBarsAndRedraw() after calling this method.
 - (void)removeAllInfoBars;
 
 @end