include RefCounted.h where needed, only.

third_party/WebKit/Source/core/html/forms/DateTimeChooser.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:
  *
  *     * 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DateTimeChooser_h
 #define DateTimeChooser_h
 
 #include "core/CoreExport.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Allocator.h"
-#include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class AXObject;
 
 struct DateTimeSuggestion {
     DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
     double value;
     String localizedValue;
@@ skipping 28 matching lines @@
 
     virtual void endChooser() = 0;
     // Returns a root AXObject in the DateTimeChooser if it's available.
     virtual AXObject* rootAXObject() = 0;
 
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 };
 
 } // namespace blink
 #endif // DateTimeChooser_h