Improve CancellableTaskFactory handling and Oilpan usage.

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 39 matching lines @@
 #include "core/fetch/ClientHintsPreferences.h"
 #include "core/frame/DOMTimerCoordinator.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/OriginsUsingFeatures.h"
 #include "core/html/CollectionType.h"
 #include "core/html/parser/ParserSynchronizationPolicy.h"
 #include "core/page/PageVisibilityState.h"
 #include "platform/Length.h"
 #include "platform/Timer.h"
 #include "platform/heap/Handle.h"
-#include "platform/scheduler/CancellableTaskFactory.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "public/platform/WebFocusType.h"
 #include "wtf/HashSet.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/WeakPtr.h"
 
 namespace blink {
 
 class AnimationTimeline;
 class AXObjectCache;
 class Attr;
 class CDATASection;
 class CSSStyleDeclaration;
 class CSSStyleSheet;
+class CancellableTaskFactory;
 class CanvasFontCache;
 class CanvasRenderingContext2D;
 class CanvasRenderingContext2DOrWebGLRenderingContext;
 class ChromeClient;
 class Comment;
 class ConsoleMessage;
 class ContextFeatures;
 class CustomElementMicrotaskRunQueue;
 class CustomElementRegistrationContext;
 class DOMImplementation;
@@ skipping 1105 matching lines @@
     OwnPtrWillBeMember<DOMImplementation> m_implementation;
 
     RefPtrWillBeMember<CSSStyleSheet> m_elemSheet;
 
     bool m_printing;
     bool m_paginatedForScreen;
 
     CompatibilityMode m_compatibilityMode;
     bool m_compatibilityModeLocked; // This is cheaper than making setCompatibilityMode virtual.
 
-    CancellableTaskFactory m_executeScriptsWaitingForResourcesTask;
+    OwnPtr<CancellableTaskFactory> m_executeScriptsWaitingForResourcesTask;
 
     bool m_hasAutofocused;
     Timer<Document> m_clearFocusedElementTimer;
     RefPtrWillBeMember<Element> m_autofocusElement;
     RefPtrWillBeMember<Element> m_focusedElement;
     RefPtrWillBeMember<Node> m_hoverNode;
     RefPtrWillBeMember<Element> m_activeHoverElement;
     RefPtrWillBeMember<Element> m_documentElement;
     UserActionElementSet m_userActionElements;
 
@@ skipping 220 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h