Pepper: Add support for multicast in PPB_UDPSocket API

ppapi/tests/test_udp_socket_private.h

 // Copyright (c) 2012 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 PPAPI_TESTS_TEST_UDP_SOCKET_PRIVATE_H_
 #define PPAPI_TESTS_TEST_UDP_SOCKET_PRIVATE_H_
 
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
@@ skipping 18 matching lines @@
   std::string BindUDPSocketFailure(pp::UDPSocketPrivate* socket,
                                    PP_NetAddress_Private *address);
   std::string ReadSocket(pp::UDPSocketPrivate* socket,
                          PP_NetAddress_Private* address,
                          size_t size,
                          std::string* message);
   std::string PassMessage(pp::UDPSocketPrivate* target,
                           pp::UDPSocketPrivate* source,
                           PP_NetAddress_Private* address,
                           const std::string& message);
+  std::string SetMulticastOptions(pp::UDPSocketPrivate* socket);
 
   std::string TestConnect();
   std::string TestConnectFailure();
   std::string TestBroadcast();
   std::string TestSetSocketFeatureErrors();
+  std::string TestMulticast();
 
   std::string host_;
   uint16_t port_;
 };
 
 #endif  // PPAPI_TESTS_TEST_UDP_SOCKET_PRIVATE_H_