Add data usage tracking for GAIA auth api

google_apis/gaia/oauth2_access_token_fetcher_impl.cc

 // Copyright 2014 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 "google_apis/gaia/oauth2_access_token_fetcher_impl.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/json/json_reader.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "base/values.h"
+#include "google_apis/gaia/gaia_auth_util.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_status.h"
 
 using net::URLFetcher;
@@ skipping 63 matching lines @@
 
 static std::unique_ptr<URLFetcher> CreateFetcher(
     URLRequestContextGetter* getter,
     const GURL& url,
     const std::string& body,
     URLFetcherDelegate* delegate) {
   bool empty_body = body.empty();
   std::unique_ptr<URLFetcher> result = net::URLFetcher::Create(
       0, url, empty_body ? URLFetcher::GET : URLFetcher::POST, delegate);
 
+  gaia::MarkURLFetcherAsGaia(result.get());
   result->SetRequestContext(getter);
   result->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                        net::LOAD_DO_NOT_SAVE_COOKIES);
   // Fetchers are sometimes cancelled because a network change was detected,
   // especially at startup and after sign-in on ChromeOS. Retrying once should
   // be enough in those cases; let the fetcher retry up to 3 times just in case.
   // http://crbug.com/163710
   result->SetAutomaticallyRetryOnNetworkChanges(3);
 
   if (!empty_body)
@@ skipping 201 matching lines @@
 bool OAuth2AccessTokenFetcherImpl::ParseGetAccessTokenFailureResponse(
     const net::URLFetcher* source,
     std::string* error) {
   CHECK(error);
   std::unique_ptr<base::DictionaryValue> value =
       ParseGetAccessTokenResponse(source);
   if (value.get() == NULL)
     return false;
   return value->GetString(kErrorKey, error);
 }