Drop FilterEffectBuilder::m_referenceFilters

third_party/WebKit/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 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 FilterEffectBuilder_h
 #define FilterEffectBuilder_h
 
 #include "core/CoreExport.h"
 #include "platform/graphics/filters/FilterEffect.h"
 #include "platform/heap/Handle.h"
-#include "wtf/Vector.h"
 
 class SkPaint;
 
 namespace blink {
 
-class Filter;
 class FilterOperations;
 class Element;
 
 class CORE_EXPORT FilterEffectBuilder final : public GarbageCollectedFinalized<FilterEffectBuilder> {
 public:
     static FilterEffectBuilder* create()
     {
         return new FilterEffectBuilder();
     }
 
     virtual ~FilterEffectBuilder();
     DECLARE_TRACE();
 
     bool build(Element*, const FilterOperations&, float zoom, const FloatSize* referenceBoxSize = nullptr, const SkPaint* fillPaint = nullptr, const SkPaint* strokePaint = nullptr);
 
     FilterEffect* lastEffect() const
     {
         return m_lastEffect;
     }
 
 private:
     FilterEffectBuilder();
 
     Member<FilterEffect> m_lastEffect;
-    HeapVector<Member<Filter>> m_referenceFilters;
 };
 
 } // namespace blink
 
 #endif // FilterEffectBuilder_h