Initial skeleton of Accessibility Object Model Phase 1

third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
index e27a9b21a417919596fb3f24fb1126e28dc7d775..299fc0fa9e2defdb8f0e547cbf2d831b1e1bc33f 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
@@ -618,7 +618,8 @@ AccessibilityRole AXNodeObject::nativeAccessibilityRoleIgnoringAria() const {
     return IgnoredRole;
 
   if (isHTMLIFrameElement(*getNode())) {
-    const AtomicString& ariaRole = getAttribute(roleAttr);
+    const AtomicString& ariaRole =
+        getAriaAttributeOrAOMProperty(AOMStringProperty::Role);
     if (ariaRole == "none" || ariaRole == "presentation")
       return IframePresentationalRole;
     return IframeRole;
@@ -691,7 +692,8 @@ AccessibilityRole AXNodeObject::determineAccessibilityRole() {
 }
 
 AccessibilityRole AXNodeObject::determineAriaRoleAttribute() const {
-  const AtomicString& ariaRole = getAttribute(roleAttr);
+  const AtomicString& ariaRole =
+      getAriaAttributeOrAOMProperty(AOMStringProperty::Role);
   if (ariaRole.isNull() || ariaRole.isEmpty())
     return UnknownRole;
 
@@ -1991,7 +1993,8 @@ bool AXNodeObject::nameFromLabelElement() const {
     return false;
 
   // Step 2C from: http://www.w3.org/TR/accname-aam-1.1
-  const AtomicString& ariaLabel = getAttribute(aria_labelAttr);
+  const AtomicString& ariaLabel =
+      getAriaAttributeOrAOMProperty(AOMStringProperty::Label);
   if (!ariaLabel.isEmpty())
     return false;
 
@@ -2925,8 +2928,10 @@ String AXNodeObject::nativeTextAlternative(
         nameSources->back().type = nameFrom;
       }
       if (Element* documentElement = document->documentElement()) {
+        AXObject* axDocument = axObjectCache().getOrCreate(documentElement);
+        DCHECK(axDocument);
         const AtomicString& ariaLabel =
-            documentElement->getAttribute(aria_labelAttr);
+            axDocument->getAriaAttributeOrAOMProperty(AOMStringProperty::Label);
         if (!ariaLabel.isEmpty()) {
           textAlternative = ariaLabel;