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

Source/web/WebAXObject.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 206 matching lines @@
 {
     if (isDetached())
         return WebAXOptionalBoolUndefined;
 
     return static_cast<WebAXOptionalBool>(m_private->isAriaGrabbed());
 }
 
 bool WebAXObject::isAriaReadOnly() const
 {
     if (isDetached())
         return 0;

[Mike West, 2014/12/09 14:12:02]

Noticed this in passing: would you mind putting together a followup CL to change
the return type to a boolean rather than casting from an int? It's ugly. :(

 
     return equalIgnoringCase(m_private->getAttribute(HTMLNames::aria_readonlyAttr), "true");
 }
 
+WebString WebAXObject::ariaAutoComplete() const
+{
+    if (isDetached())
+        return WebString();
+
+    return m_private->ariaAutoComplete();
+}
+
 bool WebAXObject::isButtonStateMixed() const
 {
     if (isDetached())
         return 0;
 
     return m_private->checkboxOrRadioValue() == ButtonStateMixed;
 }
 
 bool WebAXObject::isChecked() const
 {
@@ skipping 996 matching lines @@
     m_private = object;
     return *this;
 }
 
 WebAXObject::operator WTF::PassRefPtr<AXObject>() const
 {
     return m_private.get();
 }
 
 } // namespace blink