Adds API for testing aria-controls/flowto/owns properties.

content/shell/renderer/test_runner/web_ax_object_proxy.cc

Index: content/shell/renderer/test_runner/web_ax_object_proxy.cc
diff --git a/content/shell/renderer/test_runner/web_ax_object_proxy.cc b/content/shell/renderer/test_runner/web_ax_object_proxy.cc
index a915490a6d422ee7f2f092d28718f68260f51eec..2f12d70fd9ffeb6ff41432f45e2ca35248095cf5 100644
--- a/content/shell/renderer/test_runner/web_ax_object_proxy.cc
+++ b/content/shell/renderer/test_runner/web_ax_object_proxy.cc
@@ -515,6 +515,12 @@ WebAXObjectProxy::GetObjectTemplateBuilder(v8::Isolate* isolate) {
       .SetMethod("allAttributes", &WebAXObjectProxy::AllAttributes)
       .SetMethod("attributesOfChildren",
                  &WebAXObjectProxy::AttributesOfChildren)
+      .SetMethod("ariaControlsElementAtIndex",
+                 &WebAXObjectProxy::AriaControlsElementAtIndex)
+      .SetMethod("ariaFlowToElementAtIndex",
+                 &WebAXObjectProxy::AriaFlowToElementAtIndex)
+      .SetMethod("ariaOwnsElementAtIndex",
+                 &WebAXObjectProxy::AriaOwnsElementAtIndex)
       .SetMethod("lineForIndex", &WebAXObjectProxy::LineForIndex)
       .SetMethod("boundsForRange", &WebAXObjectProxy::BoundsForRange)
       .SetMethod("childAtIndex", &WebAXObjectProxy::ChildAtIndex)
@@ -818,6 +824,44 @@ bool WebAXObjectProxy::IsButtonStateMixed() {
   return accessibility_object_.isButtonStateMixed();
 }
 
+v8::Handle<v8::Object> WebAXObjectProxy::AriaControlsElementAtIndex(
+                                                                unsigned index)
+{
+  accessibility_object_.updateLayoutAndCheckValidity();
+  blink::WebVector<blink::WebAXObject> elements;
+  accessibility_object_.ariaControls(elements);
+  size_t elementCount = elements.size();
+  if (index >= elementCount)
+    return v8::Handle<v8::Object>();
+
+  return factory_->GetOrCreate(elements[index]);
+}
+
+v8::Handle<v8::Object> WebAXObjectProxy::AriaFlowToElementAtIndex(
+                                                                unsigned index)
+{
+  accessibility_object_.updateLayoutAndCheckValidity();
+  blink::WebVector<blink::WebAXObject> elements;
+  accessibility_object_.ariaFlowTo(elements);
+  size_t elementCount = elements.size();
+  if (index >= elementCount)
+    return v8::Handle<v8::Object>();
+
+  return factory_->GetOrCreate(elements[index]);
+}
+
+v8::Handle<v8::Object> WebAXObjectProxy::AriaOwnsElementAtIndex(unsigned index)
+{
+  accessibility_object_.updateLayoutAndCheckValidity();
+  blink::WebVector<blink::WebAXObject> elements;
+  accessibility_object_.ariaOwns(elements);
+  size_t elementCount = elements.size();
+  if (index >= elementCount)
+    return v8::Handle<v8::Object>();
+
+  return factory_->GetOrCreate(elements[index]);
+}
+
 std::string WebAXObjectProxy::AllAttributes() {
   accessibility_object_.updateLayoutAndCheckValidity();
   return GetAttributes(accessibility_object_);