[Contextual Search] Check for ARIA widget roles.

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 211 matching lines @@
     BLINK_EXPORT void characterOffsets(WebVector<int>&) const;
     BLINK_EXPORT void wordBoundaries(WebVector<int>& starts, WebVector<int>& ends) const;
 
     // Make this object visible by scrolling as many nested scrollable views as needed.
     BLINK_EXPORT void scrollToMakeVisible() const;
     // Same, but if the whole object can't be made visible, try for this subrect, in local coordinates.
     BLINK_EXPORT void scrollToMakeVisibleWithSubFocus(const WebRect&) const;
     // Scroll this object to a given point in global coordinates of the top-level window.
     BLINK_EXPORT void scrollToGlobalPoint(const WebPoint&) const;
 
+    BLINK_EXPORT static bool isARIAWidget(const WebNode&);
+
 #if BLINK_IMPLEMENTATION
     WebAXObject(const WTF::PassRefPtr<AXObject>&);
     WebAXObject& operator=(const WTF::PassRefPtr<AXObject>&);
     operator WTF::PassRefPtr<AXObject>() const;
 #endif
 
 private:
     WebPrivatePtr<AXObject> m_private;
 };
 
 } // namespace blink
 
 #endif