Remove all remaining traces of MessageLoopProxy.

chrome/browser/metrics/chrome_metrics_service_client.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/metrics/chrome_metrics_service_client.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 422 matching lines @@
           new metrics::GPUMetricsProvider));
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(
           new metrics::ScreenInfoMetricsProvider));
 
   metrics_service_->RegisterMetricsProvider(
       CreateInstallerFileMetricsProvider(
           metrics_state_manager_->IsMetricsReportingEnabled()));
 
   drive_metrics_provider_ = new metrics::DriveMetricsProvider(
-      content::BrowserThread::GetMessageLoopProxyForThread(
+      content::BrowserThread::GetTaskRunnerForThread(
           content::BrowserThread::FILE),
       chrome::FILE_LOCAL_STATE);
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(drive_metrics_provider_));
 
   profiler_metrics_provider_ = new metrics::ProfilerMetricsProvider(
       base::Bind(&metrics::IsCellularLogicEnabled));
   metrics_service_->RegisterMetricsProvider(
       std::unique_ptr<metrics::MetricsProvider>(profiler_metrics_provider_));
 
@@ skipping 312 matching lines @@
   }
 }
 
 void ChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 bool ChromeMetricsServiceClient::IsUMACellularUploadLogicEnabled() {
   return metrics::IsCellularLogicEnabled();
 }