Implement aria-placeholder

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 330 matching lines @@
   AXTextFromNativeHTMLTitleElement,
 };
 
 // The source of the accessible description of an element. This is needed
 // because on some platforms this determines how the accessible description
 // is exposed.
 enum AXDescriptionFrom {
   AXDescriptionFromUninitialized = -1,
   AXDescriptionFromAttribute = 0,
   AXDescriptionFromContents,
-  AXDescriptionFromPlaceholder,
   AXDescriptionFromRelatedElement,
 };
 
 enum AXIgnoredReason {
   AXActiveModalDialog,
   AXAncestorDisallowsChild,
   AXAncestorIsLeafNode,
   AXAriaHidden,
   AXAriaHiddenRoot,
   AXEmptyAlt,
@@ skipping 348 matching lines @@
   virtual String description(AXNameFrom,
                              AXDescriptionFrom&,
                              DescriptionSources*,
                              AXRelatedObjectVector*) const {
     return String();
   }
 
   // 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.
-  virtual String placeholder(AXNameFrom, AXDescriptionFrom) const {
-    return String();
-  }
+  virtual String placeholder(AXNameFrom) const { return String(); }
 
   // Internal functions used by name and description, above.
   typedef HeapHashSet<Member<const AXObject>> AXObjectSet;
   virtual String textAlternative(bool recursive,
                                  bool inAriaLabelledByTraversal,
                                  AXObjectSet& visited,
                                  AXNameFrom& nameFrom,
                                  AXRelatedObjectVector* relatedObjects,
                                  NameSources* nameSources) const {
     return String();
@@ skipping 331 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