Oilpan: Schedule a precise GC when a page navigates

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * 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 780 matching lines @@
     if (!elementData() || !elementData()->isUnique())
         createUniqueElementData();
     return toUniqueElementData(*m_elementData);
 }
 
 inline Node::InsertionNotificationRequest Node::insertedInto(ContainerNode* insertionPoint)
 {
     ASSERT(!childNeedsStyleInvalidation());
     ASSERT(!needsStyleInvalidation());
     ASSERT(insertionPoint->inDocument() || isContainerNode());
-    if (insertionPoint->inDocument())
+    if (insertionPoint->inDocument()) {
         setFlag(InDocumentFlag);
+        insertionPoint->document().incrementNodeCount();
+    }
     if (parentOrShadowHostNode()->isInShadowTree())
         setFlag(IsInShadowTreeFlag);
     if (childNeedsDistributionRecalc() && !insertionPoint->childNeedsDistributionRecalc())
         insertionPoint->markAncestorsWithChildNeedsDistributionRecalc();
     return InsertionDone;
 }
 
 inline void Node::removedFrom(ContainerNode* insertionPoint)
 {
     ASSERT(insertionPoint->inDocument() || isContainerNode() || isInShadowTree());
-    if (insertionPoint->inDocument())
+    if (insertionPoint->inDocument()) {
         clearFlag(InDocumentFlag);
+        insertionPoint->document().decrementNodeCount();
+    }
     if (isInShadowTree() && !treeScope().rootNode().isShadowRoot())
         clearFlag(IsInShadowTreeFlag);
     if (AXObjectCache* cache = document().existingAXObjectCache())
         cache->remove(this);
 }
 
 inline void Element::invalidateStyleAttribute()
 {
     ASSERT(elementData());
     elementData()->m_styleAttributeIsDirty = true;
@@ skipping 67 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h