[Cast] Refactor/clean-up VideoReceiver to match AudioReceiver as closely as possible.

media/cast/cast_receiver_impl.cc

Index: media/cast/cast_receiver_impl.cc
diff --git a/media/cast/cast_receiver_impl.cc b/media/cast/cast_receiver_impl.cc
index 2712d7a1d1c1f1dc7e284d5651e4cc11d00c8e16..b38cd99667700cfe3fb93cf3b132250c854f0949 100644
--- a/media/cast/cast_receiver_impl.cc
+++ b/media/cast/cast_receiver_impl.cc
@@ -92,9 +92,7 @@ CastReceiverImpl::CastReceiverImpl(
       audio_receiver_(cast_environment, audio_config, &pacer_),
       video_receiver_(cast_environment,
                       video_config,
-                      &pacer_,
-                      base::Bind(&CastReceiverImpl::UpdateTargetDelay,
-                                 base::Unretained(this))),
+                      &pacer_),
       frame_receiver_(new LocalFrameReceiver(cast_environment,
                                              &audio_receiver_,
                                              &video_receiver_)),
@@ -140,10 +138,6 @@ void CastReceiverImpl::ReceivedPacket(scoped_ptr<Packet> packet) {
   }
 }
 
-void CastReceiverImpl::UpdateTargetDelay(base::TimeDelta target_delay_ms) {
-  audio_receiver_.SetTargetDelay(target_delay_ms);
-}
-
 transport::PacketReceiverCallback CastReceiverImpl::packet_receiver() {
   return base::Bind(&CastReceiverImpl::ReceivedPacket, base::Unretained(this));
 }