Cast:Moving netwrok sender related code to a designated folder

media/cast/net/pacing/paced_sender.h

 // 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.
 
-#ifndef MEDIA_CAST_PACING_PACED_SENDER_H_
-#define MEDIA_CAST_PACING_PACED_SENDER_H_
+#ifndef MEDIA_CAST_NET_PACING_PACED_SENDER_H_
+#define MEDIA_CAST_NET_PACING_PACED_SENDER_H_
 
 #include <list>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/tick_clock.h"
@@ skipping 56 matching lines @@
   PacketSender* transport_;
 
   base::WeakPtrFactory<PacedSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PacedSender);
 };
 
 }  // namespace cast
 }  // namespace media
 
-#endif  // MEDIA_CAST_PACING_PACED_SENDER_H_
+#endif  // MEDIA_CAST_NET_PACING_PACED_SENDER_H_