Track connected subframes per-Document instead of per-Node.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 646 matching lines @@
     EventTargetData* eventTargetData() override;
     EventTargetData& ensureEventTargetData() override;
 
     void getRegisteredMutationObserversOfType(WillBeHeapHashMap<RefPtrWillBeMember<MutationObserver>, MutationRecordDeliveryOptions>&, MutationObserver::MutationType, const QualifiedName* attributeName);
     void registerMutationObserver(MutationObserver&, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
     void unregisterMutationObserver(MutationObserverRegistration*);
     void registerTransientMutationObserver(MutationObserverRegistration*);
     void unregisterTransientMutationObserver(MutationObserverRegistration*);
     void notifyMutationObserversNodeWillDetach();
 
-    unsigned connectedSubframeCount() const;
-    void incrementConnectedSubframeCount(unsigned amount = 1);
-    void decrementConnectedSubframeCount(unsigned amount = 1);
-    void updateAncestorConnectedSubframeCountForInsertion() const;
-
     PassRefPtrWillBeRawPtr<StaticNodeList> getDestinationInsertionPoints();
     HTMLSlotElement* assignedSlot() const;
     HTMLSlotElement* assignedSlotForBinding();
 
     void setAlreadySpellChecked(bool flag) { setFlag(flag, AlreadySpellCheckedFlag); }
     bool isAlreadySpellChecked() { return getFlag(AlreadySpellCheckedFlag); }
 
     bool isFinishedParsingChildren() const { return getFlag(IsFinishedParsingChildrenFlag); }
 
     DECLARE_VIRTUAL_TRACE();
@@ skipping 247 matching lines @@
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif // Node_h