Oilpan: add explicit Persistent<T>(T&) and Member<T>(T&) constructors.

Source/modules/websockets/WebSocketChannel.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
     String sourceURL;
     unsigned lineNumber = 0;
     RefPtr<ScriptCallStack> callStack = createScriptCallStack(1, true);
     if (callStack && callStack->size()) {
         sourceURL = callStack->at(0).sourceURL();
         lineNumber = callStack->at(0).lineNumber();
     }
 
     if (context->isWorkerGlobalScope()) {
         WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(context);
-        return WorkerThreadableWebSocketChannel::create(workerGlobalScope, client, sourceURL, lineNumber);
+        return WorkerThreadableWebSocketChannel::create(*workerGlobalScope, client, sourceURL, lineNumber);
     }
 
     Document* document = toDocument(context);
     if (RuntimeEnabledFeatures::experimentalWebSocketEnabled()) {
         return NewWebSocketChannelImpl::create(document, client, sourceURL, lineNumber);
     }
     return MainThreadWebSocketChannel::create(document, client, sourceURL, lineNumber);
 }
 
 } // namespace WebCore