Remove more oilpan.

sky/engine/core/css/CSSFontFaceSource.h

 /*
  * Copyright (C) 2007, 2008, 2011 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 18 matching lines @@
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 
 namespace blink {
 
 class FontResource;
 class CSSFontFace;
 class FontDescription;
 class SimpleFontData;
 
-class CSSFontFaceSource : public DummyBase<CSSFontFaceSource> {
+class CSSFontFaceSource {
 public:
     virtual ~CSSFontFaceSource();
 
     virtual bool isLocal() const { return false; }
     virtual bool isLoading() const { return false; }
     virtual bool isLoaded() const { return true; }
     virtual bool isValid() const { return true; }
 
     virtual FontResource* resource() { return 0; }
     void setFontFace(CSSFontFace* face) { m_face = face; }
@@ skipping 14 matching lines @@
 
     typedef HashMap<unsigned, RefPtr<SimpleFontData> > FontDataTable; // The hash key is composed of size synthetic styles.
 
     RawPtr<CSSFontFace> m_face; // Our owning font face.
     FontDataTable m_fontDataTable;
 };
 
 }
 
 #endif