Report data usage UMA for Chrome services

chrome/browser/metrics/variations/variations_service.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/metrics/variations/variations_service.h"
 
 #include "base/build_time.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/sys_info.h"
 #include "base/task_runner_util.h"
 #include "base/timer/elapsed_timer.h"
 #include "base/values.h"
 #include "base/version.h"
+#include "components/data_use_measurement/core/data_use_user_data.h"
 #include "components/metrics/metrics_state_manager.h"
 #include "components/network_time/network_time_tracker.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/variations/pref_names.h"
 #include "components/variations/proto/variations_seed.pb.h"
 #include "components/variations/variations_seed_processor.h"
 #include "components/variations/variations_seed_simulator.h"
 #include "components/variations/variations_switches.h"
 #include "components/variations/variations_url_constants.h"
 #include "components/version_info/version_info.h"
@@ skipping 413 matching lines @@
       local_state, state_manager));
   return result.Pass();
 }
 
 void VariationsService::DoActualFetch() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!pending_seed_request_);
 
   pending_seed_request_ = net::URLFetcher::Create(0, variations_server_url_,
                                                   net::URLFetcher::GET, this);
+  data_use_measurement::DataUseUserData::AttachToFetcher(
+      pending_seed_request_.get(),
+      data_use_measurement::DataUseUserData::VARIATIONS);
   pending_seed_request_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                                       net::LOAD_DO_NOT_SAVE_COOKIES);
   pending_seed_request_->SetRequestContext(client_->GetURLRequestContext());
   pending_seed_request_->SetMaxRetriesOn5xx(kMaxRetrySeedFetch);
   if (!seed_store_.variations_serial_number().empty() &&
       !disable_deltas_for_next_request_) {
     // If the current seed includes a country code, deltas are not supported (as
     // the serial number doesn't take into account the country code). The server
     // will update us with a seed that doesn't include a country code which will
     // enable deltas to work.
@@ skipping 287 matching lines @@
   // Otherwise, update the pref with the current Chrome version and country.
   base::ListValue new_list_value;
   new_list_value.AppendString(version.GetString());
   new_list_value.AppendString(latest_country);
   local_state_->Set(prefs::kVariationsPermanentConsistencyCountry,
                     new_list_value);
   return latest_country;
 }
 
 }  // namespace chrome_variations