media: Cleanup class/struct forward declarations

media/cast/net/cast_transport.h

 // Copyright 2014 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.
 
 // This is the main interface for the cast transport sender.  It accepts encoded
 // frames (both audio and video), encrypts their encoded data, packetizes them
 // and feeds them into a transport (e.g., UDP).
 
 // Construction of the Cast Sender and the Cast Transport should be done
 // in the following order:
@@ skipping 20 matching lines @@
 #include "media/cast/net/cast_transport_config.h"
 #include "media/cast/net/cast_transport_defines.h"
 #include "media/cast/net/rtcp/receiver_rtcp_event_subscriber.h"
 #include "media/cast/net/rtcp/rtcp_defines.h"
 #include "net/base/ip_endpoint.h"
 
 namespace base {
 class DictionaryValue;
 }  // namespace base
 
-namespace net {
-class NetLog;
-}  // namespace net
-
 namespace media {
 namespace cast {
 
-struct RtpReceiverStatistics;
 struct RtcpTimeData;
 
 // Following the initialization of either audio or video an initialization
 // status will be sent via this callback.
 using CastTransportStatusCallback =
     base::Callback<void(CastTransportStatus status)>;
 
 using BulkRawEventsCallback =
     base::Callback<void(std::unique_ptr<std::vector<FrameEvent>>,
                         std::unique_ptr<std::vector<PacketEvent>>)>;
@@ skipping 109 matching lines @@
   virtual void SendRtcpFromRtpReceiver() = 0;
 
   // Set options for the PacedSender and Wifi.
   virtual void SetOptions(const base::DictionaryValue& options) = 0;
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_CAST_TRANSPORT_H_