WebSocket Pepper API: allow to close connection without code and reason

ppapi/thunk/ppb_websocket_thunk.cc

Index: ppapi/thunk/ppb_websocket_thunk.cc
diff --git a/ppapi/thunk/ppb_websocket_thunk.cc b/ppapi/thunk/ppb_websocket_thunk.cc
index e83293ca4361da94aef94d4fec2df8ebb1ac4e26..8201cc4dab2bf2c9ff5dccefb875ed9ac7190449 100644
--- a/ppapi/thunk/ppb_websocket_thunk.cc
+++ b/ppapi/thunk/ppb_websocket_thunk.cc
@@ -41,7 +41,7 @@ int32_t Connect(PP_Resource resource,
 }
 
 int32_t Close(PP_Resource resource,
-              uint16_t code,
+              PP_WebSocketStatusCode code,
               PP_Var reason,
               PP_CompletionCallback callback) {
   EnterWebSocket enter(resource, callback, false);