Pepper: Add support for multicast in PPB_UDPSocket API

ppapi/proxy/udp_socket_resource.cc

Index: ppapi/proxy/udp_socket_resource.cc
diff --git a/ppapi/proxy/udp_socket_resource.cc b/ppapi/proxy/udp_socket_resource.cc
index d815b9fa62f5b77d2765ea85a07f2b793f386ba6..25a0f880c28bfba4b5d84b7fcea60241696cb107 100644
--- a/ppapi/proxy/udp_socket_resource.cc
+++ b/ppapi/proxy/udp_socket_resource.cc
@@ -79,11 +79,26 @@ int32_t UDPSocketResource::SetOption1_0(
     PP_UDPSocket_Option name,
     const PP_Var& value,
     scoped_refptr<TrackedCallback> callback) {
+  if (name > PP_UDPSOCKET_OPTION_RECV_BUFFER_SIZE)
+    return PP_ERROR_BADARGUMENT;
+
   return SetOptionImpl(name, value,
                        true,  // Check bind() state.
                        callback);
 }
 
+int32_t UDPSocketResource::SetOption1_1(
+    PP_UDPSocket_Option name,
+    const PP_Var& value,
+    scoped_refptr<TrackedCallback> callback) {
+  if (name > PP_UDPSOCKET_OPTION_RECV_BUFFER_SIZE)
+    return PP_ERROR_BADARGUMENT;
+
+  return SetOptionImpl(name, value,
+                       false,  // Check bind() state.
+                       callback);
+}
+
 int32_t UDPSocketResource::SetOption(
     PP_UDPSocket_Option name,
     const PP_Var& value,
@@ -93,5 +108,27 @@ int32_t UDPSocketResource::SetOption(
                        callback);
 }
 
+int32_t UDPSocketResource::JoinGroup(
+    PP_Resource group,
+    scoped_refptr<TrackedCallback> callback) {
+  EnterNetAddressNoLock enter(group, true);
+  if (enter.failed())
+    return PP_ERROR_BADRESOURCE;
+
+  return JoinGroupImpl(&enter.object()->GetNetAddressPrivate(),
+                       callback);
+}
+
+int32_t UDPSocketResource::LeaveGroup(
+    PP_Resource group,
+    scoped_refptr<TrackedCallback> callback) {
+  EnterNetAddressNoLock enter(group, true);
+  if (enter.failed())
+    return PP_ERROR_BADRESOURCE;
+
+  return LeaveGroupImpl(&enter.object()->GetNetAddressPrivate(),
+                        callback);
+}
+
 }  // namespace proxy
 }  // namespace ppapi