Remove all remaining traces of MessageLoopProxy.

chrome/browser/chromeos/proxy_config_service_impl.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/proxy_config_service_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
@@ skipping 35 matching lines @@
   return PrefProxyConfigTrackerImpl::PrefConfigToNetConfig(*proxy_dict,
                                                            proxy_config);
 }
 
 }  // namespace
 
 ProxyConfigServiceImpl::ProxyConfigServiceImpl(PrefService* profile_prefs,
                                                PrefService* local_state_prefs)
     : PrefProxyConfigTrackerImpl(
           profile_prefs ? profile_prefs : local_state_prefs,
-          content::BrowserThread::GetMessageLoopProxyForThread(
+          content::BrowserThread::GetTaskRunnerForThread(
               content::BrowserThread::IO)),
       active_config_state_(ProxyPrefs::CONFIG_UNSET),
       profile_prefs_(profile_prefs),
       local_state_prefs_(local_state_prefs),
       pointer_factory_(this) {
   const base::Closure proxy_change_callback = base::Bind(
       &ProxyConfigServiceImpl::OnProxyPrefChanged, base::Unretained(this));
 
   if (profile_prefs) {
     profile_pref_registrar_.Init(profile_prefs);
@@ skipping 176 matching lines @@
       std::unique_ptr<base::DictionaryValue> config_dict(
           effective_config.ToValue());
       VLOG(1) << this << ": Proxy changed: "
               << ProxyPrefs::ConfigStateToDebugString(active_config_state_)
               << ", " << *config_dict;
     }
   }
 }
 
 }  // namespace chromeos