Introducing new API placeHolder() to expose placeholder attribute on MAC

Source/modules/accessibility/AXNodeObject.h

 /*
  * 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 57 matching lines @@
     AccessibilityRole determineAriaRoleAttribute() const;
     void elementsFromAttribute(WillBeHeapVector<RawPtrWillBeMember<Element> >& elements, const QualifiedName&) const;
     bool hasContentEditableAttributeSet() const;
     bool isDescendantOfBarrenParent() const;
     // This returns true if it's focusable but it's not content editable and it's not a control or ARIA control.
     bool isGenericFocusableElement() const;
     HTMLLabelElement* labelForElement(Element*) const;
     AXObject* menuButtonForMenu() const;
     Element* menuItemElementForMenu() const;
     Element* mouseButtonListener() const;
+    String placeHolder() const;

[aboxhall, 2014/12/18 04:17:54]

This should be all lower-case (placeholder) as it is a single word.

     AccessibilityRole remapAriaRoleDueToParent(AccessibilityRole) const;
     bool isNativeCheckboxOrRadio() const;
     void setNode(Node*);
     AXObject* correspondingControlForLabelElement() const;
     HTMLLabelElement* labelElementContainer() const;
 
     //
     // Overridden from AXObject.
     //
 
@@ skipping 111 matching lines @@
     void changeValueByPercent(float percentChange);
     float stepValueForRange() const;
     AXObject* findChildWithTagName(const HTMLQualifiedName&) const;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXNodeObject, isAXNodeObject());
 
 } // namespace blink
 
 #endif // AXNodeObject_h