Improve CancellableTaskFactory handling and Oilpan usage.

Source/core/html/parser/HTMLParserScheduler.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 60 matching lines @@
 
 class HTMLParserScheduler {
     WTF_MAKE_NONCOPYABLE(HTMLParserScheduler); WTF_MAKE_FAST_ALLOCATED(HTMLParserScheduler);
 public:
     static PassOwnPtr<HTMLParserScheduler> create(HTMLDocumentParser* parser)
     {
         return adoptPtr(new HTMLParserScheduler(parser));
     }
     ~HTMLParserScheduler();
 
-    bool isScheduledForResume() const { return m_isSuspendedWithActiveTimer || m_cancellableContinueParse.isPending(); }
+    bool isScheduledForResume() const { return m_isSuspendedWithActiveTimer || m_cancellableContinueParse->isPending(); }
 
     void scheduleForResume();
     bool yieldIfNeeded(const SpeculationsPumpSession&, bool startingScript);
 
     /**
      * Can only be called if this scheduler is suspended. If this is called,
      * then after the scheduler is resumed by calling resume(), this call
      * ensures that HTMLDocumentParser::resumeAfterYield will be called. Used to
      * signal this scheduler that the background html parser sent chunks to
      * HTMLDocumentParser while it was suspended.
      */
     void forceResumeAfterYield();
 
     void suspend();
     void resume();
 
     void detach(); // Clear active tasks if any.
 
 private:
     explicit HTMLParserScheduler(HTMLDocumentParser*);
 
     bool shouldYield(const SpeculationsPumpSession&, bool startingScript) const;
     void continueParsing();
 
     HTMLDocumentParser* m_parser;
     WebTaskRunner* m_loadingTaskRunner; // NOT OWNED
 
-    CancellableTaskFactory m_cancellableContinueParse;
+    OwnPtr<CancellableTaskFactory> m_cancellableContinueParse;
     bool m_isSuspendedWithActiveTimer;
 };
 
 }
 
 #endif