include RefCounted.h where needed, only.

third_party/WebKit/Source/platform/exported/WebContentSettingCallbacks.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "public/platform/WebContentSettingCallbacks.h"
 
 #include "platform/ContentSettingCallbacks.h"
+#include "wtf/RefCounted.h"
 
 namespace blink {
 
 class WebContentSettingCallbacksPrivate : public RefCounted<WebContentSettingCallbacksPrivate> {
 public:
     static PassRefPtr<WebContentSettingCallbacksPrivate> create(const PassOwnPtr<ContentSettingCallbacks>& callbacks)
     {
         return adoptRef(new WebContentSettingCallbacksPrivate(callbacks));
     }
 
@@ skipping 27 matching lines @@
 }
 
 void WebContentSettingCallbacks::doDeny()
 {
     ASSERT(!m_private.isNull());
     m_private->callbacks()->onDenied();
     m_private.reset();
 }
 
 } // namespace blink