Fix ASSERTS in worker code in OSX....

third_party/WebKit/WebCore/bindings/v8/WorkerContextExecutionProxy.cpp

 /*
  * Copyright (C) 2009 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 79 matching lines @@
         if (forgetV8EventObject(event))
           event->deref();
     }
     m_events.clear();
 
     // Dispose the context.
     if (!m_context.IsEmpty()) {
         m_context.Dispose();
         m_context.Clear();
     }
-
-    // Remove the wrapping between JS object and DOM object. This is because
-    // the worker context object is going to be disposed immediately when a
-    // worker thread is tearing down. We do not want to re-delete the real object
-    // when JS object is garbage collected.
-    v8::Locker locker;
-    v8::HandleScope scope;
-    v8::Persistent<v8::Object> wrapper = domObjectMap().get(m_workerContext);
-    if (!wrapper.IsEmpty())
-        V8Proxy::SetDOMWrapper(wrapper, V8ClassIndex::INVALID_CLASS_INDEX, NULL);
-    domObjectMap().forget(m_workerContext);
 }
 
 WorkerContextExecutionProxy* WorkerContextExecutionProxy::retrieve()
 {
     v8::Handle<v8::Context> context = v8::Context::GetCurrent();
     v8::Handle<v8::Object> global = context->Global();
     global = V8Proxy::LookupDOMWrapper(V8ClassIndex::WORKERCONTEXT, global);
     ASSERT(!global.IsEmpty());
     WorkerContext* workerContext = V8Proxy::ToNativeObject<WorkerContext>(V8ClassIndex::WORKERCONTEXT, global);
     return workerContext->script()->proxy();
@@ skipping 22 matching lines @@
     // Bail out if allocation failed.
     if (jsWorkerContext.IsEmpty()) {
         dispose();
         return;
     }
 
     // Wrap the object.
     V8Proxy::SetDOMWrapper(jsWorkerContext, V8ClassIndex::ToInt(V8ClassIndex::WORKERCONTEXT), m_workerContext);
 
     V8Proxy::SetJSWrapperForDOMObject(m_workerContext, v8::Persistent<v8::Object>::New(jsWorkerContext));
+    m_workerContext->ref();
 
     // Insert the object instance as the prototype of the shadow object.
     v8::Handle<v8::Object> globalObject = m_context->Global();
     globalObject->Set(implicitProtoString, jsWorkerContext);
 }
 
 v8::Local<v8::Function> WorkerContextExecutionProxy::GetConstructor(V8ClassIndex::V8WrapperType type)
 {
     // Enter the context of the proxy to make sure that the function is
     // constructed in the context corresponding to this proxy.
@@ skipping 195 matching lines @@
 }
 
 void WorkerContextExecutionProxy::trackEvent(Event* event)
 {
     m_events.append(event);
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WORKERS)