Cast: Let the extension control if DSCP is on or off.

chrome/renderer/media/cast_transport_sender_ipc.cc

 // 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.
 
 #include "chrome/renderer/media/cast_transport_sender_ipc.h"
 
 #include "base/callback.h"
 #include "base/id_map.h"
 #include "chrome/common/cast_messages.h"
 #include "chrome/renderer/media/cast_ipc_dispatcher.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "media/cast/cast_sender.h"
 
 CastTransportSenderIPC::ClientCallbacks::ClientCallbacks() {}
 CastTransportSenderIPC::ClientCallbacks::~ClientCallbacks() {}
 
 CastTransportSenderIPC::CastTransportSenderIPC(
     const net::IPEndPoint& remote_end_point,
+    scoped_ptr<base::DictionaryValue> options,
     const media::cast::CastTransportStatusCallback& status_cb,
     const media::cast::BulkRawEventsCallback& raw_events_cb)
     : status_callback_(status_cb), raw_events_callback_(raw_events_cb) {
   if (CastIPCDispatcher::Get()) {
     channel_id_ = CastIPCDispatcher::Get()->AddSender(this);
   }
-  Send(new CastHostMsg_New(channel_id_, remote_end_point));
+  Send(new CastHostMsg_New(channel_id_, remote_end_point, *options));
 }
 
 CastTransportSenderIPC::~CastTransportSenderIPC() {
   Send(new CastHostMsg_Delete(channel_id_));
   if (CastIPCDispatcher::Get()) {
     CastIPCDispatcher::Get()->RemoveSender(channel_id_);
   }
 }
 
 void CastTransportSenderIPC::InitializeAudio(
@@ skipping 77 matching lines @@
   it->second.cast_message_cb.Run(cast_message);
 }
 
 void CastTransportSenderIPC::Send(IPC::Message* message) {
   if (CastIPCDispatcher::Get()) {
     CastIPCDispatcher::Get()->Send(message);
   } else {
     delete message;
   }
 }