Convert most of extensions and some other random stuff to using the base namespace for Values.

chrome/browser/extensions/api/push_messaging/obfuscated_gaia_id_fetcher.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/extensions/api/push_messaging/obfuscated_gaia_id_fetcher.h"
 
 #include <vector>
 
 #include "base/json/json_reader.h"
 #include "base/values.h"
@@ skipping 109 matching lines @@
 }
 
 // static
 bool ObfuscatedGaiaIdFetcher::ParseResponse(
     const std::string& data, std::string* result) {
   scoped_ptr<base::Value> value(base::JSONReader::Read(data));
 
   if (!value.get())
     return false;
 
-  DictionaryValue* dict = NULL;
+  base::DictionaryValue* dict = NULL;
   if (!value->GetAsDictionary(&dict))
     return false;
 
   return dict->GetString("id", result);
 }
 
 }  // namespace extensions