[Mac] Apply CrTrackingArea to the two other places where we get |-mouseMoved:| zombie messages.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h
index bf7a85adfa9f2a8a57701036fa890de7a376066d..54b918c42788b74c9db4f42f5fbebd752e591c11 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -10,6 +10,7 @@
 
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button.h"
+#import "chrome/browser/ui/cocoa/tracking_area.h"
 
 @class BookmarkBarController;
 @class BookmarkBarFolderView;
@@ -118,7 +119,7 @@
   BookmarkBarFolderController* folderController_;
 
   // Implement basic menu scrolling through this tracking area.
-  scoped_nsobject<NSTrackingArea> scrollTrackingArea_;
+  ScopedCrTrackingArea scrollTrackingArea_;
 
   // Timer to continue scrolling as needed.  We own the timer but
   // don't release it when done (we invalidate it).