Revert of content/common: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/renderer/render_thread_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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 1451 matching lines @@
 }
 
 bool RenderThreadImpl::IsGatherPixelRefsEnabled() {
   return is_gather_pixel_refs_enabled_;
 }
 
 bool RenderThreadImpl::IsMainThread() {
   return !!current();
 }
 
-scoped_refptr<base::SingleThreadTaskRunner>
-RenderThreadImpl::GetIOThreadTaskRunner() {
-  return io_thread_task_runner_;
+scoped_refptr<base::MessageLoopProxy> RenderThreadImpl::GetIOLoopProxy() {
+  return io_message_loop_proxy_;
 }
 
 scoped_ptr<base::SharedMemory> RenderThreadImpl::AllocateSharedMemory(
     size_t size) {
   return scoped_ptr<base::SharedMemory>(
       HostAllocateSharedMemoryBuffer(size));
 }
 
 CreateCommandBufferResult RenderThreadImpl::CreateViewCommandBuffer(
       int32 surface_id,
@@ skipping 123 matching lines @@
 #endif
       channel_handle.name.empty()) {
     // Otherwise cancel the connection.
     return NULL;
   }
 
   GetContentClient()->SetGpuInfo(gpu_info);
 
   // Cache some variables that are needed on the compositor thread for our
   // implementation of GpuChannelHostFactory.
-  io_thread_task_runner_ = ChildProcess::current()->io_message_loop_proxy();
+  io_message_loop_proxy_ = ChildProcess::current()->io_message_loop_proxy();
 
   gpu_channel_ =
       GpuChannelHost::Create(this,
                              gpu_info,
                              channel_handle,
                              ChildProcess::current()->GetShutDownEvent(),
                              gpu_memory_buffer_manager());
   return gpu_channel_.get();
 }
 
@@ skipping 255 matching lines @@
 }
 
 void RenderThreadImpl::PendingRenderFrameConnect::OnConnectionError() {
   size_t erased =
       RenderThreadImpl::current()->pending_render_frame_connects_.erase(
           routing_id_);
   DCHECK_EQ(1u, erased);
 }
 
 }  // namespace content