Ensure permission bubble is stacked below the exclusive access bubble.

chrome/browser/ui/views/exclusive_access_bubble_views.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_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 29 matching lines @@
                              const GURL& url,
                              ExclusiveAccessBubbleType bubble_type);
   ~ExclusiveAccessBubbleViews() override;
 
   void UpdateContent(const GURL& url, ExclusiveAccessBubbleType bubble_type);
 
   // Repositions |popup_| if it is visible.
   void RepositionIfVisible();
 
   views::View* GetView();
+  views::Widget* GetWidget() { return popup_; }
 
  private:
   // Starts or stops polling the mouse location based on |popup_| and
   // |bubble_type_|.
   void UpdateMouseWatcher();
 
   // Updates |popup|'s bounds given |animation_| and |animated_attribute_|.
   void UpdateBounds();
 
   void UpdateViewContent(ExclusiveAccessBubbleType bubble_type);
@@ skipping 34 matching lines @@
   // The contents of the popup.
   SubtleNotificationView* view_;
   base::string16 browser_fullscreen_exit_accelerator_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ExclusiveAccessBubbleViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_H_