Merge ReferenceFilter into Filter

Source/core/paint/FilterEffectBuilder.h

 /*
  * Copyright (C) 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 "core/CoreExport.h"
 #include "platform/graphics/filters/FilterEffect.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
+class Filter;
 class FilterOperations;
-class ReferenceFilter;
 class Element;
 
 class CORE_EXPORT FilterEffectBuilder final : public RefCountedWillBeGarbageCollectedFinalized<FilterEffectBuilder> {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(FilterEffectBuilder);
 public:
     static PassRefPtrWillBeRawPtr<FilterEffectBuilder> create()
     {
         return adoptRefWillBeNoop(new FilterEffectBuilder());
     }
 
     virtual ~FilterEffectBuilder();
     DECLARE_TRACE();
 
     bool build(Element*, const FilterOperations&, float zoom);
 
     PassRefPtrWillBeRawPtr<FilterEffect> lastEffect() const
     {
         return m_lastEffect;
     }
 
 private:
     FilterEffectBuilder();
 
     RefPtrWillBeMember<FilterEffect> m_lastEffect;
-    WillBeHeapVector<RefPtrWillBeMember<ReferenceFilter>> m_referenceFilters;
+    WillBeHeapVector<RefPtrWillBeMember<Filter>> m_referenceFilters;
 };
 
 } // namespace blink
 
 #endif // FilterEffectBuilder_h