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

chrome/renderer/media/cast_session.cc

 // 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 "chrome/renderer/media/cast_session.h"
 
 #include "base/message_loop/message_loop_proxy.h"
 #include "chrome/renderer/media/cast_session_delegate.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/video_encode_accelerator.h"
@@ skipping 70 matching lines @@
                  base::Unretained(delegate_.get()),
                  config,
                  media::BindToCurrentLoop(callback),
                  media::BindToCurrentLoop(error_callback),
                  media::BindToCurrentLoop(
                      base::Bind(&CreateVideoEncodeAccelerator)),
                  media::BindToCurrentLoop(
                      base::Bind(&CreateVideoEncodeMemory))));
 }
 
-void CastSession::StartUDP(const net::IPEndPoint& remote_endpoint) {
+void CastSession::StartUDP(const net::IPEndPoint& remote_endpoint,
+                           scoped_ptr<base::DictionaryValue> options) {
   io_message_loop_proxy_->PostTask(
       FROM_HERE,
       base::Bind(
           &CastSessionDelegate::StartUDP,
           base::Unretained(delegate_.get()),
-          remote_endpoint));
+          remote_endpoint,
+          base::Passed(&options)));
 }
 
 void CastSession::ToggleLogging(bool is_audio, bool enable) {
   io_message_loop_proxy_->PostTask(
       FROM_HERE,
       base::Bind(&CastSessionDelegate::ToggleLogging,
                  base::Unretained(delegate_.get()),
                  is_audio,
                  enable));
 }
@@ skipping 12 matching lines @@
 
 void CastSession::GetStatsAndReset(bool is_audio,
                                    const StatsCallback& callback) {
   io_message_loop_proxy_->PostTask(
       FROM_HERE,
       base::Bind(&CastSessionDelegate::GetStatsAndReset,
                  base::Unretained(delegate_.get()),
                  is_audio,
                  media::BindToCurrentLoop(callback)));
 }