Remove all remaining traces of MessageLoopProxy.

chrome/browser/extensions/api/dial/dial_api.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/extensions/api/dial/dial_api.h"
 
 #include <stddef.h>
 #include <utility>
 #include <vector>
 
@@ skipping 21 matching lines @@
 const size_t kDialMaxDevices = 256;
 
 }  // namespace
 
 namespace extensions {
 
 namespace dial = api::dial;
 
 DialAPI::DialAPI(Profile* profile)
     : RefcountedKeyedService(
-          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)),
+          BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)),
       profile_(profile) {
   EventRouter::Get(profile)
       ->RegisterObserver(this, dial::OnDeviceList::kEventName);
 }
 
 DialAPI::~DialAPI() {}
 
 DialRegistry* DialAPI::dial_registry() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!dial_registry_.get()) {
@@ skipping 114 matching lines @@
 
 bool DialDiscoverNowFunction::Respond() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   SetResult(base::MakeUnique<base::FundamentalValue>(result_));
   return true;
 }
 
 }  // namespace api
 
 }  // namespace extensions