Finish implementation and tests of 5 ARIA 1.1 attributes.

ui/accessibility/ax_node_data.h

Index: ui/accessibility/ax_node_data.h
diff --git a/ui/accessibility/ax_node_data.h b/ui/accessibility/ax_node_data.h
index acd5ec54c4765d20f31c9efc37c9b8e740192edd..f44024f79c157e04d18093e0e824e4026cdac0ef 100644
--- a/ui/accessibility/ax_node_data.h
+++ b/ui/accessibility/ax_node_data.h
@@ -24,6 +24,14 @@ class Transform;
 
 namespace ui {
 
+// Return true if |attr| should be interpreted as the id of another node
+// in the same tree.
+AX_EXPORT bool IsNodeIdIntAttribute(AXIntAttribute attr);
+
+// Return true if |attr| should be interpreted as a list of ids of
+// nodes in the same tree.
+AX_EXPORT bool IsNodeIdIntListAttribute(AXIntListAttribute attr);
+
 // A compact representation of the accessibility information for a
 // single accessible object, in a form that can be serialized and sent from
 // one process to another.