Re-land: Initial skeleton of Accessibility Object Model Phase 1

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

Index: third_party/WebKit/Source/core/dom/Element.cpp
diff --git a/third_party/WebKit/Source/core/dom/Element.cpp b/third_party/WebKit/Source/core/dom/Element.cpp
index 939513be530ab3f38d2d9839257f98d8bec967ae..585beca84fb915bb397971818812de64b35f9488 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -1187,6 +1187,24 @@ String Element::computedName() {
   return cache->get()->computedNameForNode(this);
 }
 
+AccessibleNode* Element::existingAccessibleNode() const {
+  if (!RuntimeEnabledFeatures::accessibilityObjectModelEnabled())
+    return nullptr;
+
+  if (!hasRareData())
+    return nullptr;
+
+  return elementRareData()->accessibleNode();
+}
+
+AccessibleNode* Element::accessibleNode() {
+  if (!RuntimeEnabledFeatures::accessibilityObjectModelEnabled())
+    return nullptr;
+
+  ElementRareData& rareData = ensureElementRareData();
+  return rareData.ensureAccessibleNode(this);
+}
+
 const AtomicString& Element::getAttribute(const AtomicString& localName) const {
   if (!elementData())
     return nullAtom;