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

google_apis/gaia/oauth2_mint_token_flow.cc

Index: google_apis/gaia/oauth2_mint_token_flow.cc
diff --git a/google_apis/gaia/oauth2_mint_token_flow.cc b/google_apis/gaia/oauth2_mint_token_flow.cc
index f8680e39bdc0d37b25ad4507848466de36b65412..0fae02e9623c3b2b5bdb9236159ba1fc94f85f68 100644
--- a/google_apis/gaia/oauth2_mint_token_flow.cc
+++ b/google_apis/gaia/oauth2_mint_token_flow.cc
@@ -178,7 +178,7 @@ void OAuth2MintTokenFlow::ProcessApiCallSuccess(
   std::string response_body;
   source->GetResponseAsString(&response_body);
   scoped_ptr<base::Value> value(base::JSONReader::Read(response_body));
-  DictionaryValue* dict = NULL;
+  base::DictionaryValue* dict = NULL;
   if (!value.get() || !value->GetAsDictionary(&dict)) {
     ReportFailure(GoogleServiceAuthError::FromUnexpectedServiceResponse(
         "Not able to parse a JSON object from a service response."));