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

chrome/browser/chromeos/system_key_event_listener.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_CHROMEOS_SYSTEM_KEY_EVENT_LISTENER_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_KEY_EVENT_LISTENER_H_
 
 #include "base/memory/singleton.h"
 #include "base/message_loop.h"
 
 typedef union _XEvent XEvent;
 
 namespace chromeos {
 
-class SystemKeyEventListener : public MessageLoopForUI::Observer {
+class SystemKeyEventListener : public base::MessageLoopForUI::Observer {
  public:
   // Observer for caps lock state changes.
   class CapsLockObserver {
    public:
     virtual void OnCapsLockChange(bool enabled) = 0;
 
    protected:
     CapsLockObserver() {}
     virtual ~CapsLockObserver() {}
 
@@ skipping 62 matching lines @@
 
   // Base X ID for events from the XKB extension.
   int xkb_event_base_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemKeyEventListener);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_KEY_EVENT_LISTENER_H_