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 8043437642a66ddd4e39c358b0e55fdb7fd1a707..38409cb11e99af9aa8617025a98f2dd62983fac2 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -1188,6 +1188,24 @@ 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;