[Sync] Move //components/sync to the syncer namespace, take 2.

ios/chrome/browser/metrics/ios_chrome_metrics_service_client.cc

 // Copyright 2015 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 "ios/chrome/browser/metrics/ios_chrome_metrics_service_client.h"
 
 #include <stdint.h>
 
 #include <utility>
 #include <vector>
@@ skipping 215 matching lines @@
       std::unique_ptr<metrics::MetricsProvider>(
           SigninStatusMetricsProvider::CreateInstance(base::WrapUnique(
               new IOSChromeSigninStatusMetricsProviderDelegate))));
 
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new MobileSessionShutdownMetricsProvider(metrics_service_.get())));
 
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
-          new sync_driver::DeviceCountMetricsProvider(
+          new syncer::DeviceCountMetricsProvider(
               base::Bind(&IOSChromeSyncClient::GetDeviceInfoTrackers))));
 
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new translate::TranslateRankerMetricsProvider()));
 }
 
 void IOSChromeMetricsServiceClient::OnInitTaskGotDriveMetrics() {
   finished_init_task_callback_.Run();
 }
@@ skipping 64 matching lines @@
 
 void IOSChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 metrics::EnableMetricsDefault
 IOSChromeMetricsServiceClient::GetMetricsReportingDefaultState() {
   return metrics::GetMetricsReportingDefaultState(
       GetApplicationContext()->GetLocalState());
 }