chrome: Use base::MessageLoop. (Part 3)

chrome/browser/notifications/balloon_collection_impl.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.
 
 // Handles the visible notification (or balloons).
 
 #ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_IMPL_H_
 #define CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_IMPL_H_
 
 #include <deque>
@@ skipping 18 matching lines @@
 #define USE_OFFSETS 1
 #endif
 
 // A balloon collection represents a set of notification balloons being
 // shown on the screen.  It positions new notifications according to
 // a layout, and monitors for balloons being closed, which it reports
 // up to its parent, the notification UI manager.
 class BalloonCollectionImpl : public BalloonCollection,
                               public content::NotificationObserver
 #if USE_OFFSETS
-                            , public MessageLoopForUI::Observer
+                            , public base::MessageLoopForUI::Observer
 #endif
 {
  public:
   BalloonCollectionImpl();
   virtual ~BalloonCollectionImpl();
 
   // BalloonCollection interface.
   virtual void Add(const Notification& notification,
                    Profile* profile) OVERRIDE;
   virtual bool DoesIdExist(const std::string& id) OVERRIDE;
@@ skipping 189 matching lines @@
   base::WeakPtrFactory<BalloonCollectionImpl> reposition_factory_;
 
   // Is the balloon collection currently listening for UI events?
   bool added_as_message_loop_observer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BalloonCollectionImpl);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_IMPL_H_