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

content/common/gpu/client/gpu_video_encode_accelerator_host.cc

Index: content/common/gpu/client/gpu_video_encode_accelerator_host.cc
diff --git a/content/common/gpu/client/gpu_video_encode_accelerator_host.cc b/content/common/gpu/client/gpu_video_encode_accelerator_host.cc
index 1cbfeaa025a5a3c300068a36dba5e7d87b91a0db..214b32d16aff3c3bd2770af34c988dea0c7f1a22 100644
--- a/content/common/gpu/client/gpu_video_encode_accelerator_host.cc
+++ b/content/common/gpu/client/gpu_video_encode_accelerator_host.cc
@@ -5,6 +5,7 @@
 #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"
@@ -199,9 +200,11 @@
   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) {