Add 4 ARIA 1.1 attributes using new sparse attribute interface.

third_party/WebKit/Source/modules/accessibility/AXObject.h

 /*
  * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 310 matching lines @@
 };
 
 enum TextUnderElementMode {
   TextUnderElementAll,
   TextUnderElementAny  // If the text is unimportant, just whether or not it's
                        // present
 };
 
 enum class AXBoolAttribute {};
 
-enum class AXStringAttribute {};
+enum class AXStringAttribute {
+  AriaKeyShortcuts,
+  AriaRoleDescription,
+};
 
 enum class AXObjectAttribute {
   AriaActiveDescendant,
+  AriaErrorMessage,
 };
 
 enum class AXObjectVectorAttribute {
   AriaControls,
+  AriaDetails,
   AriaFlowTo,
 };
 
 class AXSparseAttributeClient {
  public:
   virtual void addBoolAttribute(AXBoolAttribute, bool) = 0;
   virtual void addStringAttribute(AXStringAttribute, const String&) = 0;
   virtual void addObjectAttribute(AXObjectAttribute, AXObject&) = 0;
   virtual void addObjectVectorAttribute(AXObjectVectorAttribute,
                                         HeapVector<Member<AXObject>>&) = 0;
@@ skipping 751 matching lines @@
   static unsigned s_numberOfLiveAXObjects;
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate)           \
   DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, \
                     object.predicate)
 
 }  // namespace blink
 
 #endif  // AXObject_h