On Document disposal, only dispose of script runner.

third_party/WebKit/Source/core/dom/ScriptRunner.h

 /*
  * Copyright (C) 2010 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 30 matching lines @@
 class ScriptLoader;
 
 class CORE_EXPORT ScriptRunner final : public NoBaseWillBeGarbageCollectedFinalized<ScriptRunner> {
     WTF_MAKE_NONCOPYABLE(ScriptRunner); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(ScriptRunner);
 public:
     static PassOwnPtrWillBeRawPtr<ScriptRunner> create(Document* document)
     {
         return adoptPtrWillBeNoop(new ScriptRunner(document));
     }
     ~ScriptRunner();
+#if !ENABLE(OILPAN)
+    void dispose();
+#endif
 
     enum ExecutionType { ASYNC_EXECUTION, IN_ORDER_EXECUTION };
     void queueScriptForExecution(ScriptLoader*, ExecutionType);
     bool hasPendingScripts() const { return !m_scriptsToExecuteSoon.isEmpty() || !m_scriptsToExecuteInOrder.isEmpty() || !m_pendingAsyncScripts.isEmpty(); }
     void suspend();
     void resume();
     void notifyScriptReady(ScriptLoader*, ExecutionType);
     void notifyScriptLoadError(ScriptLoader*, ExecutionType);
 
     static void movePendingAsyncScript(Document&, Document&, ScriptLoader*);
@@ skipping 14 matching lines @@
     void postTaskIfOneIsNotAlreadyInFlight();
 
     RawPtrWillBeMember<Document> m_document;
     WillBeHeapDeque<RawPtrWillBeMember<ScriptLoader>> m_scriptsToExecuteInOrder;
     // http://www.whatwg.org/specs/web-apps/current-work/#set-of-scripts-that-will-execute-as-soon-as-possible
     WillBeHeapDeque<RawPtrWillBeMember<ScriptLoader>> m_scriptsToExecuteSoon;
     WillBeHeapHashSet<RawPtrWillBeMember<ScriptLoader>> m_pendingAsyncScripts;
     OwnPtr<CancellableTaskFactory> m_executeScriptsTaskFactory;
 };
 
-}
+} // namespace blink
 
-#endif
+#endif // ScriptRunner_h