include RefCounted.h where needed, only.

third_party/WebKit/Source/core/html/track/vtt/VTTRegionList.h

 /*
  * Copyright (C) 2013 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef VTTRegionList_h
 #define VTTRegionList_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/html/track/vtt/VTTRegion.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
+#include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class VTTRegionList final : public GarbageCollected<VTTRegionList>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static VTTRegionList* create()
     {
         return new VTTRegionList;
@@ skipping 11 matching lines @@
 
 private:
     VTTRegionList();
 
     HeapVector<Member<VTTRegion>> m_list;
 };
 
 } // namespace blink
 
 #endif // VTTRegionList_h