Move MessageLoop to base namespace.

chrome/browser/extensions/extension_uninstall_dialog.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_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/gfx/image/image_skia.h"
 
 class Browser;
+class Profile;
+
+namespace base {
 class MessageLoop;
-class Profile;
+}
 
 namespace extensions {
 class Extension;
 }
 
 namespace gfx {
 class Image;
 }
 
 class ExtensionUninstallDialog
@@ skipping 74 matching lines @@
 
   // Keeps track of whether we're still waiting for an image to load before
   // we show the dialog.
   enum State {
     kImageIsLoading,  // Image is loading asynchronously.
     kDialogIsShowing, // Dialog is shown after image is loaded.
     kBrowserIsClosing // Browser is closed while image is still loading.
   };
   State state_;
 
-  MessageLoop* ui_loop_;
+  base::MessageLoop* ui_loop_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_