Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/core/workers/WorkerGlobalScope.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 74 matching lines @@
     , m_timeOrigin(timeOrigin)
 {
     ScriptWrappable::init(this);
     setClient(this);
     setSecurityOrigin(SecurityOrigin::create(url));
     m_workerClients->reattachThread();
 }
 
 WorkerGlobalScope::~WorkerGlobalScope()
 {
-    ASSERT(thread()->isCurrentThread());
-
-    // Notify proxy that we are going away. This can free the WorkerThread object, so do not access it after this.
-    thread()->workerReportingProxy().workerGlobalScopeDestroyed();
-
-    setClient(0);
 }
 
 void WorkerGlobalScope::applyContentSecurityPolicyFromString(const String& policy, ContentSecurityPolicy::HeaderType contentSecurityPolicyType)
 {
     setContentSecurityPolicy(ContentSecurityPolicy::create(this));
     contentSecurityPolicy()->didReceiveHeader(policy, contentSecurityPolicyType, ContentSecurityPolicy::HeaderSourceHTTP);
 }
 
 ExecutionContext* WorkerGlobalScope::executionContext() const
 {
@@ skipping 71 matching lines @@
 void WorkerGlobalScope::postTask(PassOwnPtr<ExecutionContextTask> task)
 {
     thread()->runLoop().postTask(task);
 }
 
 void WorkerGlobalScope::clearInspector()
 {
     m_workerInspectorController.clear();
 }
 
+void WorkerGlobalScope::detach()
+{
+    ASSERT(thread()->isCurrentThread());
+
+    // Notify proxy that we are going away. This can free the WorkerThread object, so do not access it after this.
+    thread()->workerReportingProxy().workerGlobalScopeDestroyed();
+
+    clearScript();
+    clearInspector();
+    setClient(0);
+    // NOTE: the thread reference isn't cleared, as the execution context's
+    // thread is accessed by other GCed objects being finalized/destructed.
+}
+
 void WorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionState& exceptionState)
 {
     ASSERT(contentSecurityPolicy());
     Vector<String>::const_iterator urlsEnd = urls.end();
     Vector<KURL> completedURLs;
     for (Vector<String>::const_iterator it = urls.begin(); it != urlsEnd; ++it) {
         const KURL& url = executionContext()->completeURL(*it);
         if (!url.isValid()) {
             exceptionState.throwDOMException(SyntaxError, "The URL '" + *it + "' is invalid.");
             return;
@@ skipping 71 matching lines @@
 bool WorkerGlobalScope::idleNotification()
 {
     return script()->idleNotification();
 }
 
 WorkerEventQueue* WorkerGlobalScope::eventQueue() const
 {
     return m_eventQueue.get();
 }
 
+void WorkerGlobalScope::trace(Visitor* visitor)
+{
+    visitor->trace(m_console);
+    visitor->trace(m_location);
+    visitor->trace(m_navigator);
+    WillBeHeapSupplementable<WorkerGlobalScope>::trace(visitor);
+}
+
 } // namespace WebCore