Blink CompositorWorker: Use CompositorElementId and CompositorIdToElementMap.

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

 /*
  * 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)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 332 matching lines @@
 
 bool Element::hasAnimations() const
 {
     if (!hasRareData())
         return false;
 
     ElementAnimations* elementAnimations = elementRareData()->elementAnimations();
     return elementAnimations && !elementAnimations->isEmpty();
 }
 
+CompositorElementId Element::compositorElementId() const
+{
+    ElementAnimations* animations = elementAnimations();
+    return animations ? animations->compositorElementId() : CompositorElementId();
+}
+
+CompositorElementId Element::assignCompositorElementId()
+{
+    CompositorElementId elementId = ensureElementAnimations().compositorElementId();
+    DCHECK(elementId);
+    return elementId;
+}
+
 Node::NodeType Element::getNodeType() const
 {
     return ELEMENT_NODE;
 }
 
 bool Element::hasAttribute(const QualifiedName& name) const
 {
     return hasAttributeNS(name.namespaceURI(), name.localName());
 }
 
@@ skipping 3336 matching lines @@
 
 DEFINE_TRACE(Element)
 {
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink