Only close popup bubble when a tab switch happens.

chrome/browser/ui/cocoa/base_bubble_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.
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/cocoa_protocols.h"
 #include "base/memory/scoped_ptr.h"
 
-namespace BaseBubbleControllerInternal {
-class Bridge;
-}
-
 @class InfoBubbleView;
+class TabStripModelObserverBridge;
 
 // Base class for bubble controllers. Manages a xib that contains an
 // InfoBubbleWindow which contains an InfoBubbleView. Contains code to close
 // the bubble window on clicks outside of the window, and the like.
 // To use this class:
 // 1. Create a new xib that contains a window. Change the window's class to
 //    InfoBubbleWindow. Give it a child view that autosizes to the window's full
 //    size, give it class InfoBubbleView. Make the controller the window's
 //    delegate.
 // 2. Create a subclass of BaseBubbleController.
 // 3. Change the xib's File Owner to your subclass.
 // 4. Hook up the File Owner's |bubble_| to the InfoBubbleView in the xib.
 @interface BaseBubbleController : NSWindowController<NSWindowDelegate> {
  @private
   NSWindow* parentWindow_;  // weak
   NSPoint anchor_;
   IBOutlet InfoBubbleView* bubble_;  // to set arrow position
-  // Bridge that listens for notifications.
-  scoped_ptr<BaseBubbleControllerInternal::Bridge> baseBridge_;
+  // Bridge for tab change notifications.
+  scoped_ptr<TabStripModelObserverBridge> tabStripObserverBridge_;
 
   // Non-nil only on 10.7+. Both weak, owned by AppKit.
   // A local event tap that will dismiss the bubble when a click is delivered
   // outside the window. This is needed because the window shares first
   // responder with its parent.
   id eventTap_;
   // A notification observer that gets triggered when any window resigns key.
   id resignationObserver_;
 }
 
@@ skipping 36 matching lines @@
 
 @end
 
 // Methods for use by subclasses.
 @interface BaseBubbleController (Protected)
 // Registers event taps *after* the window is shown so that the bubble is
 // dismissed when it resigns key. This only needs to be called if
 // |-showWindow:| is overriden and does not call super. Noop on OSes <10.7.
 - (void)registerKeyStateEventTap;
 @end