Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/chromeos/notifications/balloon_view_host_chromeos.cc

 // 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.
 
 #include "chrome/browser/chromeos/notifications/balloon_view_host_chromeos.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/stl_util.h"
@@ skipping 23 matching lines @@
 
 bool BalloonViewHost::HandleContextMenu(
     const content::ContextMenuParams& params) {
   // No context menu for chromeos system notifications.
   return true;
 }
 
 void BalloonViewHost::WebUISend(WebContents* tab,
                                 const GURL& source_url,
                                 const std::string& name,
-                                const ListValue& args) {
+                                const base::ListValue& args) {
   // Look up the callback for this message.
   MessageCallbackMap::const_iterator callback =
       message_callbacks_.find(name);
   if (callback == message_callbacks_.end())
     return;
 
   // Run callback.
   callback->second.Run(&args);
 }
 
 }  // namespace chromeos