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

content/common/gpu/client/gpu_video_encode_accelerator_host.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/common/gpu/client/gpu_video_encode_accelerator_host.h"
 
 #include "base/logging.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/gpu/media/gpu_video_accelerator_util.h"
 #include "media/base/video_frame.h"
 
 namespace content {
 
 #define NOTIFY_ERROR(error) \
   PostNotifyError(error);   \
   DLOG(ERROR)
@@ skipping 174 matching lines @@
   impl_ = NULL;
 
   // The CommandBufferProxyImpl is going away; error out this VEA.
   OnChannelError();
 }
 
 void GpuVideoEncodeAcceleratorHost::PostNotifyError(Error error) {
   DCHECK(CalledOnValidThread());
   DVLOG(2) << "PostNotifyError(): error=" << error;
   // Post the error notification back to this thread, to avoid re-entrancy.
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::Bind(&GpuVideoEncodeAcceleratorHost::OnNotifyError,
-                            weak_this_factory_.GetWeakPtr(), error));
+  base::MessageLoopProxy::current()->PostTask(
+      FROM_HERE,
+      base::Bind(&GpuVideoEncodeAcceleratorHost::OnNotifyError,
+                 weak_this_factory_.GetWeakPtr(),
+                 error));
 }
 
 void GpuVideoEncodeAcceleratorHost::Send(IPC::Message* message) {
   DCHECK(CalledOnValidThread());
   uint32 message_type = message->type();
   if (!channel_->Send(message)) {
     NOTIFY_ERROR(kPlatformFailureError) << "Send(" << message_type
                                         << ") failed";
   }
 }
@@ skipping 53 matching lines @@
   weak_this_factory_.InvalidateWeakPtrs();
 
   // Client::NotifyError() may Destroy() |this|, so calling it needs to be the
   // last thing done on this stack!
   media::VideoEncodeAccelerator::Client* client = NULL;
   std::swap(client_, client);
   client->NotifyError(error);
 }
 
 }  // namespace content