Cast:Moving netwrok sender related code to a designated folder

media/cast/pacing/mock_paced_packet_sender.cc

Index: media/cast/pacing/mock_paced_packet_sender.cc
diff --git a/media/cast/pacing/mock_paced_packet_sender.cc b/media/cast/pacing/mock_paced_packet_sender.cc
deleted file mode 100644
index 2b79d9fba75e685431512c8164a528c52fe64573..0000000000000000000000000000000000000000
--- a/media/cast/pacing/mock_paced_packet_sender.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/pacing/mock_paced_packet_sender.h"
-
-namespace media {
-namespace cast {
-
-MockPacedPacketSender::MockPacedPacketSender() {
-}
-
-MockPacedPacketSender::~MockPacedPacketSender() {
-}
-
-}  // namespace cast
-}  // namespace media