content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/renderer/chrome_mock_render_thread.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/renderer/chrome_mock_render_thread.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(ENABLE_EXTENSIONS)
 #include "extensions/common/extension_messages.h"
 #endif
 
 ChromeMockRenderThread::ChromeMockRenderThread() {
 }
 
 ChromeMockRenderThread::~ChromeMockRenderThread() {
 }
 
-scoped_refptr<base::MessageLoopProxy>
+scoped_refptr<base::SingleThreadTaskRunner>
 ChromeMockRenderThread::GetIOMessageLoopProxy() {
   return io_message_loop_proxy_;
 }
 
 void ChromeMockRenderThread::set_io_message_loop_proxy(
     const scoped_refptr<base::MessageLoopProxy>& proxy) {
   io_message_loop_proxy_ = proxy;
 }
 
 bool ChromeMockRenderThread::OnMessageReceived(const IPC::Message& msg) {
@@ skipping 17 matching lines @@
 #if defined(ENABLE_EXTENSIONS)
 void ChromeMockRenderThread::OnOpenChannelToExtension(
     int routing_id,
     const ExtensionMsg_ExternalConnectionInfo& info,
     const std::string& channel_name,
     bool include_tls_channel_id,
     int* port_id) {
   *port_id = 0;
 }
 #endif