signin: record http response codes and net errors in OAuth2AccessTokenFetcher.

google_apis/gaia/oauth2_access_token_fetcher.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 GOOGLE_APIS_GAIA_OAUTH2_ACCESS_TOKEN_FETCHER_H_
 #define GOOGLE_APIS_GAIA_OAUTH2_ACCESS_TOKEN_FETCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 72 matching lines @@
                          const base::Time& expiration_time);
   void OnGetTokenFailure(const GoogleServiceAuthError& error);
 
   // Other helpers.
   static GURL MakeGetAccessTokenUrl();
   static std::string MakeGetAccessTokenBody(
       const std::string& client_id,
       const std::string& client_secret,
       const std::string& refresh_token,
       const std::vector<std::string>& scopes);
-  static bool ParseGetAccessTokenResponse(const net::URLFetcher* source,
-                                          std::string* access_token,
-                                          int* expires_in);
+
+  static bool ParseGetAccessTokenSuccessResponse(
+      const net::URLFetcher* source,
+      std::string* access_token,
+      int* expires_in);
+
+  static bool ParseGetAccessTokenFailureResponse(
+      const net::URLFetcher* source,
+      std::string* error);
 
   // State that is set during construction.
   OAuth2AccessTokenConsumer* const consumer_;
   net::URLRequestContextGetter* const getter_;
   State state_;
 
   // While a fetch is in progress.
   scoped_ptr<net::URLFetcher> fetcher_;
   std::string client_id_;
   std::string client_secret_;
   std::string refresh_token_;
   std::vector<std::string> scopes_;
 
   friend class OAuth2AccessTokenFetcherTest;
   FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherTest,
                            ParseGetAccessTokenResponse);
   FRIEND_TEST_ALL_PREFIXES(OAuth2AccessTokenFetcherTest,
                            MakeGetAccessTokenBody);
 
   DISALLOW_COPY_AND_ASSIGN(OAuth2AccessTokenFetcher);
 };
 
 #endif  // GOOGLE_APIS_GAIA_OAUTH2_ACCESS_TOKEN_FETCHER_H_