Add AX attribute for input type

Source/core/accessibility/AXNodeObject.cpp

 /*
 * Copyright (C) 2012, 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:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 1040 matching lines @@
     if (isTextControl())
         return text();
 
     // FIXME: We might need to implement a value here for more types
     // FIXME: It would be better not to advertise a value at all for the types for which we don't implement one;
     // this would require subclassing or making accessibilityAttributeNames do something other than return a
     // single static array.
     return String();
 }
 
+
+const AtomicString& AXNodeObject::textInputType() const
+{
+    Node* node = this->node();
+    if (!isHTMLInputElement(node))
+        return nullAtom;
+
+    HTMLInputElement& input = toHTMLInputElement(*node);
+    if (input.isTextField())
+        return input.type();
+    return nullAtom;
+}
+
 String AXNodeObject::ariaDescribedByAttribute() const
 {
     WillBeHeapVector<RawPtrWillBeMember<Element> > elements;
     elementsFromAttribute(elements, aria_describedbyAttr);
 
     return accessibilityDescriptionForElements(elements);
 }
 
 
 String AXNodeObject::ariaLabeledByAttribute() const
@@ skipping 650 matching lines @@
     float range = maxValueForRange() - minValueForRange();
     float value = valueForRange();
 
     value += range * (percentChange / 100);
     setValue(String::number(value));
 
     axObjectCache()->postNotification(node(), AXObjectCache::AXValueChanged, true);
 }
 
 } // namespace blink