Revert of [media] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

media/filters/default_media_permission.cc

Index: media/filters/default_media_permission.cc
diff --git a/media/filters/default_media_permission.cc b/media/filters/default_media_permission.cc
index 60623b9a781d6f5aa031cbb7453ba094aec1c35a..80d7093f71d2250774819cd1fe80120b0e904329 100644
--- a/media/filters/default_media_permission.cc
+++ b/media/filters/default_media_permission.cc
@@ -7,8 +7,7 @@
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/message_loop/message_loop_proxy.h"
 
 namespace media {
 
@@ -26,7 +25,7 @@
                   "real user's consent. This should NOT be used for in a real "
                   "user-facing product.";
   // Return the callback asynchronously.
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
+  base::MessageLoopProxy::current()->PostTask(
       FROM_HERE, base::Bind(permission_status_cb, allow));
 }