Pepper: Add support for multicast in PPB_UDPSocket API

ppapi/thunk/ppb_udp_socket_api.h

Index: ppapi/thunk/ppb_udp_socket_api.h
diff --git a/ppapi/thunk/ppb_udp_socket_api.h b/ppapi/thunk/ppb_udp_socket_api.h
index 3a03ea76c82832bdf61a198bfebd345449dab916..028c562eb507e3c78580d09569022fcdcc7958db 100644
--- a/ppapi/thunk/ppb_udp_socket_api.h
+++ b/ppapi/thunk/ppb_udp_socket_api.h
@@ -34,9 +34,16 @@ class PPAPI_THUNK_EXPORT PPB_UDPSocket_API {
   virtual int32_t SetOption1_0(PP_UDPSocket_Option name,
                                const PP_Var& value,
                                scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t SetOption1_1(PP_UDPSocket_Option name,
+                               const PP_Var& value,
+                               scoped_refptr<TrackedCallback> callback) = 0;
   virtual int32_t SetOption(PP_UDPSocket_Option name,
                             const PP_Var& value,
                             scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t JoinGroup(PP_Resource group,
+                            scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t LeaveGroup(PP_Resource group,
+                            scoped_refptr<TrackedCallback> callback) = 0;
 };
 
 }  // namespace thunk