Cast audio only policy enforcement support.

extensions/browser/api/cast_channel/cast_channel_api.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 "extensions/browser/api/cast_channel/cast_channel_api.h"
 
 #include <limits>
 #include <string>
 
 #include "base/json/json_writer.h"
@@ skipping 329 matching lines @@
   scoped_ptr<CastSocket> test_socket = api_->GetSocketForTest();
   if (test_socket.get()) {
     socket = test_socket.release();
   } else {
     socket = new cast_channel::CastSocketImpl(
         extension_->id(), *ip_endpoint_, channel_auth_,
         ExtensionsBrowserClient::Get()->GetNetLog(),
         base::TimeDelta::FromMilliseconds(connect_info_->timeout.get()
                                               ? *connect_info_->timeout
                                               : kDefaultConnectTimeoutMillis),
-        api_->GetLogger());
+        api_->GetLogger(),
+        connect_info_->capabilities.get() ? *connect_info_->capabilities : 0);

[mark a. foltz, 2015/01/13 01:42:19]

Consider declaring a constant value to provide the default.  It's not clear from
reading this that the default is "no capabilities".

[vadimgo, 2015/01/13 02:21:44]

Done.

   }
   new_channel_id_ = AddSocket(socket);
   scoped_ptr<CastMessageHandler> delegate(new CastMessageHandler(api_, socket));
   api_->GetLogger()->LogNewSocketEvent(*socket);
   socket->Connect(delegate.Pass(),
                   base::Bind(&CastChannelOpenFunction::OnOpen, this));
 }
 
 void CastChannelOpenFunction::OnOpen(cast_channel::ChannelError result) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
@@ skipping 201 matching lines @@
   std::string& signature = params_->signature;
   if (signature.empty() || keys.empty() ||
       !cast_channel::SetTrustedCertificateAuthorities(keys, signature)) {
     SetError("Unable to set authority keys.");
   }
 
   AsyncWorkCompleted();
 }
 
 }  // namespace extensions