Implemented the "aria-current" state on Windows.

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 119 matching lines @@
 
     BLINK_EXPORT WebString accessKey() const;
     BLINK_EXPORT unsigned backgroundColor() const;
     BLINK_EXPORT unsigned color() const;
     // Deprecated.
     BLINK_EXPORT void colorValue(int& r, int& g, int& b) const;
     BLINK_EXPORT unsigned colorValue() const;
     BLINK_EXPORT WebAXObject ariaActiveDescendant() const;
     BLINK_EXPORT WebString ariaAutoComplete() const;
     BLINK_EXPORT bool ariaControls(WebVector<WebAXObject>& controlsElements) const;
+    BLINK_EXPORT WebAXAriaCurrentState ariaCurrentState() const;
     BLINK_EXPORT bool ariaFlowTo(WebVector<WebAXObject>& flowToElements) const;
     BLINK_EXPORT bool ariaHasPopup() const;
     BLINK_EXPORT bool isEditable() const;
     BLINK_EXPORT bool isMultiline() const;
     BLINK_EXPORT bool isRichlyEditable() const;
     BLINK_EXPORT bool ariaOwns(WebVector<WebAXObject>& ownsElements) const;
     BLINK_EXPORT WebRect boundingBoxRect() const;
     BLINK_EXPORT WebString fontFamily() const;
     BLINK_EXPORT float fontSize() const;
     BLINK_EXPORT bool canvasHasFallbackContent() const;
@@ skipping 150 matching lines @@
     operator AXObject*() const;
 #endif
 
 private:
     WebPrivatePtr<AXObject> m_private;
 };
 
 } // namespace blink
 
 #endif