Add data usage tracking for supervised_user service

chrome/browser/supervised_user/legacy/supervised_user_refresh_token_fetcher.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 "chrome/browser/supervised_user/legacy/supervised_user_refresh_token_fetcher.h"
 
 #include "base/callback.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
+#include "components/data_use_measurement/core/data_use_user_data.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/gaia_oauth_client.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "google_apis/gaia/oauth2_api_call_flow.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_status_code.h"
@@ skipping 133 matching lines @@
   DCHECK_EQ(access_token_request_.get(), request);
   access_token_ = access_token;
 
   GURL url(GaiaUrls::GetInstance()->oauth2_issue_token_url());
   // GaiaOAuthClient uses id 0, so we use 1 to distinguish the requests in
   // unit tests.
   const int id = 1;
 
   url_fetcher_ = URLFetcher::Create(id, url, URLFetcher::POST, this);
 
+  data_use_measurement::DataUseUserData::AttachToFetcher(
+      url_fetcher_.get(),
+      data_use_measurement::DataUseUserData::SUPERVISED_USER);
   url_fetcher_->SetRequestContext(context_);
   url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                              net::LOAD_DO_NOT_SAVE_COOKIES);
   url_fetcher_->SetAutomaticallyRetryOnNetworkChanges(kNumRetries);
   url_fetcher_->AddExtraRequestHeader(
       base::StringPrintf(kAuthorizationHeaderFormat, access_token.c_str()));
 
   std::string body = base::StringPrintf(
       kIssueTokenBodyFormat,
       net::EscapeUrlEncodedData(
@@ skipping 120 matching lines @@
     const std::string& account_id,
     const std::string& device_id,
     URLRequestContextGetter* context) {
   std::unique_ptr<SupervisedUserRefreshTokenFetcher> fetcher(
       new SupervisedUserRefreshTokenFetcherImpl(
           oauth2_token_service, account_id, device_id, context));
   return fetcher;
 }
 
 SupervisedUserRefreshTokenFetcher::~SupervisedUserRefreshTokenFetcher() {}