Introduce new API ariaAutoComplete() to expose correct state and object attribute.

Source/modules/accessibility/AXNodeObject.cpp

Index: Source/modules/accessibility/AXNodeObject.cpp
diff --git a/Source/modules/accessibility/AXNodeObject.cpp b/Source/modules/accessibility/AXNodeObject.cpp
index b78ff0024555c0a172b681137b3dc14676184b6e..fa66c165ad799c219b3ca4bc9043ea795262a06c 100644
--- a/Source/modules/accessibility/AXNodeObject.cpp
+++ b/Source/modules/accessibility/AXNodeObject.cpp
@@ -950,6 +950,16 @@ unsigned AXNodeObject::hierarchicalLevel() const
     return level;
 }
 
+String AXNodeObject::ariaAutoComplete() const
+{
+    const AtomicString& ariaAutoComplete = getAttribute(aria_autocompleteAttr);
+
+    if (roleValue() == ComboBoxRole || roleValue() == TextAreaRole)

[dmazzoni, 2014/12/09 16:19:35]

This test should come first so we don't need to call getAttribute only to throw
it away.

if (roleValue() != ComboBoxRole && roleValue() != TextAreaRole)
    return String();

Also, it's optional whether you want to have this return an enum or not, but I
think you should filter this to only valid attribute values.

I.e. if the value is "list", "inline", or "both", return the string - otherwise
return the empty string.

No need to return "none", since that's the same as no aria-autocomplete.

+        return ariaAutoComplete;
+
+    return String();
+}
+
 String AXNodeObject::text() const
 {
     // If this is a user defined static text, use the accessible name computation.