On Document disposal, only dispose of script runner.

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

 /*
  * 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 @@
 ScriptRunner::ScriptRunner(Document* document)
     : m_document(document)
     , m_executeScriptsTaskFactory(CancellableTaskFactory::create(this, &ScriptRunner::executeScripts))
 {
     ASSERT(document);
 }
 
 ScriptRunner::~ScriptRunner()
 {
 #if !ENABLE(OILPAN)
+    dispose();
+#endif
+}
+
+#if !ENABLE(OILPAN)
+void ScriptRunner::dispose()
+{
     // Make sure that ScriptLoaders don't keep their PendingScripts alive.
     for (ScriptLoader* scriptLoader : m_scriptsToExecuteInOrder)
         scriptLoader->detach();
     for (ScriptLoader* scriptLoader : m_scriptsToExecuteSoon)
         scriptLoader->detach();
     for (ScriptLoader* scriptLoader : m_pendingAsyncScripts)
         scriptLoader->detach();
+
+    m_scriptsToExecuteInOrder.clear();
+    m_scriptsToExecuteSoon.clear();
+    m_pendingAsyncScripts.clear();
+}
 #endif
-}
 
 void ScriptRunner::addPendingAsyncScript(ScriptLoader* scriptLoader)
 {
     m_document->incrementLoadEventDelayCount();
     m_pendingAsyncScripts.add(scriptLoader);
 }
 
 void ScriptRunner::queueScriptForExecution(ScriptLoader* scriptLoader, ExecutionType executionType)
 {
     ASSERT(scriptLoader);
@@ skipping 154 matching lines @@
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_document);
     visitor->trace(m_scriptsToExecuteInOrder);
     visitor->trace(m_scriptsToExecuteSoon);
     visitor->trace(m_pendingAsyncScripts);
 #endif
 }
 
 } // namespace blink