Implement aria-placeholder

third_party/WebKit/public/web/WebAXObject.h

 /*
  * 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 172 matching lines @@
   // accessible description of the object, which is secondary to |name|, an enum
   // indicating where the description was derived from, and a list of objects
   // that were used to derive the description, if any.
   BLINK_EXPORT WebString
   description(WebAXNameFrom,
               WebAXDescriptionFrom&,
               WebVector<WebAXObject>& descriptionObjects) const;
   // Takes the result of nameFrom and descriptionFrom from calling |name| and
   // |description|, above, and retrieves the placeholder of the object, if
   // present and if it wasn't already exposed by one of the two functions above.
-  BLINK_EXPORT WebString placeholder(WebAXNameFrom, WebAXDescriptionFrom) const;
+  BLINK_EXPORT WebString placeholder(WebAXNameFrom) const;
 
   // The following selection functions get or set the global document
   // selection and can be called on any object in the tree.
   BLINK_EXPORT void selection(WebAXObject& anchorObject,
                               int& anchorOffset,
                               WebAXTextAffinity& anchorAffinity,
                               WebAXObject& focusObject,
                               int& focusOffset,
                               WebAXTextAffinity& focusAffinity) const;
   BLINK_EXPORT void setSelection(const WebAXObject& anchorObject,
@@ skipping 136 matching lines @@
   operator AXObject*() const;
 #endif
 
  private:
   WebPrivatePtr<AXObject> m_private;
 };
 
 }  // namespace blink
 
 #endif