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

chrome/browser/net/gaia/gaia_oauth_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/net/gaia/gaia_oauth_fetcher.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 224 matching lines @@
     }
   }
 }
 
 // Helper method that extracts tokens from a successful reply.
 // static
 void GaiaOAuthFetcher::ParseUserInfoResponse(const std::string& data,
                                              std::string* email_result) {
   scoped_ptr<base::Value> value(base::JSONReader::Read(data));
   if (value->GetType() == base::Value::TYPE_DICTIONARY) {
-    Value* email_value;
-    DictionaryValue* dict = static_cast<DictionaryValue*>(value.get());
+    base::Value* email_value;
+    base::DictionaryValue* dict =
+        static_cast<base::DictionaryValue*>(value.get());
     if (dict->Get("email", &email_value)) {
       if (email_value->GetType() == base::Value::TYPE_STRING) {
         email_value->GetAsString(email_result);
       }
     }
   }
 }
 
 void GaiaOAuthFetcher::StartOAuthLogin(
     const char* source,
@@ skipping 298 matching lines @@
       break;
     case OAUTH2_REVOKE_TOKEN:
       OnOAuthRevokeTokenFetched(data, status, response_code);
       break;
   }
 }
 
 bool GaiaOAuthFetcher::ShouldAutoFetch(RequestType fetch_step) {
   return fetch_step <= auto_fetch_limit_;
 }