Revert of [Chromecast] Add explicit task_runner in CMA test

chromecast/media/cma/test/media_component_device_feeder_for_test.cc

Index: chromecast/media/cma/test/media_component_device_feeder_for_test.cc
diff --git a/chromecast/media/cma/test/media_component_device_feeder_for_test.cc b/chromecast/media/cma/test/media_component_device_feeder_for_test.cc
index 313bd8c0e5a97d2d9d41dfcf3949bc563de3a908..84cc3da2b0762928ae1d54d5c052ea709b00deed 100644
--- a/chromecast/media/cma/test/media_component_device_feeder_for_test.cc
+++ b/chromecast/media/cma/test/media_component_device_feeder_for_test.cc
@@ -13,6 +13,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "chromecast/media/base/decrypt_context.h"
@@ -24,7 +25,6 @@
 #include "chromecast/media/cma/base/decoder_buffer_base.h"
 #include "chromecast/media/cma/test/frame_segmenter_for_test.h"
 #include "media/base/audio_decoder_config.h"
-#include "media/base/bind_to_current_loop.h"
 #include "media/base/buffers.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/video_decoder_config.h"
@@ -78,11 +78,12 @@
   DCHECK(!frames_.empty());
   scoped_refptr<DecoderBufferBase> buffer = frames_.front();
 
-  MediaComponentDevice::FrameStatus status = media_component_device_->PushFrame(
-      scoped_refptr<DecryptContext>(), buffer,
-      ::media::BindToCurrentLoop(
+  MediaComponentDevice::FrameStatus status =
+      media_component_device_->PushFrame(
+          scoped_refptr<DecryptContext>(),
+          buffer,
           base::Bind(&MediaComponentDeviceFeederForTest::OnFramePushed,
-                     base::Unretained(this))));
+                     base::Unretained(this)));
   EXPECT_NE(status, MediaComponentDevice::kFrameFailed);
   frames_.pop_front();