Revert of [media] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

media/filters/clockless_video_frame_scheduler.cc

Index: media/filters/clockless_video_frame_scheduler.cc
diff --git a/media/filters/clockless_video_frame_scheduler.cc b/media/filters/clockless_video_frame_scheduler.cc
index 18ebaa5b86ffdd91eb1a703ed88201bfa5659845..b37d430776378739733d8e44308ac006bfc768e4 100644
--- a/media/filters/clockless_video_frame_scheduler.cc
+++ b/media/filters/clockless_video_frame_scheduler.cc
@@ -6,8 +6,7 @@
 
 #include "base/bind.h"
 #include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "media/base/video_frame.h"
 
 namespace media {
@@ -25,7 +24,7 @@
     base::TimeTicks /* wall_ticks */,
     const DoneCB& done_cb) {
   display_cb_.Run(frame);
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
+  base::MessageLoopProxy::current()->PostTask(
       FROM_HERE, base::Bind(done_cb, frame, DISPLAYED));
 }