Split out Members, Persistents and SelfKeepAlive in separate headers.

third_party/WebKit/Source/core/css/CSSImageGeneratorValue.h

 /*
  * Copyright (C) 2008 Apple 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 11 matching lines @@
  * (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 CSSImageGeneratorValue_h
 #define CSSImageGeneratorValue_h
 
 #include "core/CoreExport.h"
 #include "core/css/CSSValue.h"
 #include "platform/geometry/IntSizeHash.h"
+#include "platform/heap/SelfKeepAlive.h"
 #include "wtf/HashCountedSet.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Document;
 class Image;
 class LayoutObject;
 class FloatSize;
 
@@ skipping 46 matching lines @@
     // a member we don't need to have this hack where we keep a persistent to the instance as long as
     // there are clients in the LayoutObjectSizeCountMap.
     SelfKeepAlive<CSSImageGeneratorValue> m_keepAlive;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSImageGeneratorValue, isImageGeneratorValue());
 
 } // namespace blink
 
 #endif // CSSImageGeneratorValue_h