Remove all remaining traces of MessageLoopProxy.

content/shell/browser/shell_url_request_context_getter.cc

 // Copyright 2013 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 "content/shell/browser/shell_url_request_context_getter.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 155 matching lines @@
         new net::HttpCache::DefaultBackend(
             net::DISK_CACHE,
 #if defined(OS_ANDROID)
             // TODO(rdsmith): Remove when default backend for Android is
             // changed to simple cache.
             net::CACHE_BACKEND_SIMPLE,
 #else
             net::CACHE_BACKEND_DEFAULT,
 #endif
             cache_path, 0,
-            BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE)));
+            BrowserThread::GetTaskRunnerForThread(BrowserThread::CACHE)));
 
     net::HttpNetworkSession::Params network_session_params;
     network_session_params.cert_verifier =
         url_request_context_->cert_verifier();
     network_session_params.transport_security_state =
         url_request_context_->transport_security_state();
     network_session_params.cert_transparency_verifier =
         url_request_context_->cert_transparency_verifier();
     network_session_params.ct_policy_enforcer =
         url_request_context_->ct_policy_enforcer();
@@ skipping 72 matching lines @@
     request_interceptors_.weak_clear();
 
     storage_->set_job_factory(std::move(top_job_factory));
   }
 
   return url_request_context_.get();
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
     ShellURLRequestContextGetter::GetNetworkTaskRunner() const {
-  return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
+  return BrowserThread::GetTaskRunnerForThread(BrowserThread::IO);
 }
 
 net::HostResolver* ShellURLRequestContextGetter::host_resolver() {
   return url_request_context_->host_resolver();
 }
 
 }  // namespace content