Cast:Moving netwrok sender related code to a designated folder

media/cast/rtp_common/mock_rtp_payload_feedback.cc

Index: media/cast/rtp_common/mock_rtp_payload_feedback.cc
diff --git a/media/cast/rtp_common/mock_rtp_payload_feedback.cc b/media/cast/rtp_common/mock_rtp_payload_feedback.cc
deleted file mode 100644
index 28b0b025a971088c9cc934c8450f0ec90b3ad792..0000000000000000000000000000000000000000
--- a/media/cast/rtp_common/mock_rtp_payload_feedback.cc
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "media/cast/rtp_common/mock_rtp_payload_feedback.h"
-
-namespace media {
-namespace cast {
-
-MockRtpPayloadFeedback::MockRtpPayloadFeedback() {
-}
-
-MockRtpPayloadFeedback::~MockRtpPayloadFeedback() {
-}
-
-}  // namespace cast
-}  // namespace media