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

chrome/renderer/media/cast_session_delegate.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 CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 #define CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 41 matching lines @@
   typedef base::Callback<void(scoped_ptr<base::BinaryValue>)> EventLogsCallback;
   typedef base::Callback<void(scoped_ptr<base::DictionaryValue>)> StatsCallback;
   typedef base::Callback<void(const std::string&)> ErrorCallback;
 
   CastSessionDelegate();
   virtual ~CastSessionDelegate();
 
   // This will start the session by configuring and creating the Cast transport
   // and the Cast sender.
   // Must be called before initialization of audio or video.
-  void StartUDP(const net::IPEndPoint& remote_endpoint);
+  void StartUDP(const net::IPEndPoint& remote_endpoint,
+                const std::string& options);

[Alpha Left Google, 2014/09/09 00:30:45]

I suggest this be base::DictionaryValue which is a key value pair data
structure.

[hubbe, 2014/09/09 20:10:01]

Done.

 
   // After calling StartAudio() or StartVideo() encoding of that media will
   // begin as soon as data is delivered to its sink, if the second method is
   // called the first media will be restarted. It is strongly recommended not to
   // deliver any data between calling the two methods.
   // It's OK to call only one of the two methods.
   // StartUDP must be called before these methods.
   void StartAudio(const media::cast::AudioSenderConfig& config,
                   const AudioFrameInputAvailableCallback& callback,
                   const ErrorCallback& error_callback);
@@ skipping 37 matching lines @@
   scoped_ptr<media::cast::RawEventSubscriberBundle> event_subscribers_;
 
   // Proxy to the IO message loop.
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
   base::WeakPtrFactory<CastSessionDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastSessionDelegate);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_CAST_SESSION_DELEGATE_H_