Remove all remaining traces of MessageLoopProxy.

chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.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/chromeos/policy/device_cloud_policy_manager_chromeos.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 103 matching lines @@
 
 DeviceCloudPolicyManagerChromeOS::DeviceCloudPolicyManagerChromeOS(
     std::unique_ptr<DeviceCloudPolicyStoreChromeOS> store,
     const scoped_refptr<base::SequencedTaskRunner>& task_runner,
     ServerBackedStateKeysBroker* state_keys_broker)
     : CloudPolicyManager(
           dm_protocol::kChromeDevicePolicyType,
           std::string(),
           store.get(),
           task_runner,
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)),
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE),
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)),
       device_store_(std::move(store)),
       state_keys_broker_(state_keys_broker),
       task_runner_(task_runner),
       local_state_(nullptr) {}
 
 DeviceCloudPolicyManagerChromeOS::~DeviceCloudPolicyManagerChromeOS() {}
 
 void DeviceCloudPolicyManagerChromeOS::Initialize(PrefService* local_state) {
   CHECK(local_state);
 
@@ skipping 234 matching lines @@
       base::WrapUnique(new DeviceStatusCollector(
           local_state_, chromeos::system::StatisticsProvider::GetInstance(),
           DeviceStatusCollector::LocationUpdateRequester(),
           DeviceStatusCollector::VolumeInfoFetcher(),
           DeviceStatusCollector::CPUStatisticsFetcher(),
           DeviceStatusCollector::CPUTempFetcher())),
       task_runner_));
 }
 
 }  // namespace policy