Turn FilterEffectBuilder into a stack-allocated helper

third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. 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.
@@ skipping 15 matching lines @@
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #ifndef PaintLayerFilterInfo_h
 #define PaintLayerFilterInfo_h
 
 #include "core/svg/SVGResourceClient.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefPtr.h"
 
 namespace blink {
 
-class FilterEffectBuilder;
+class FilterEffect;
 class FilterOperations;
 class PaintLayer;
 
 // PaintLayerFilterInfo holds the filter information for painting.
 // https://drafts.fxtf.org/filters/
 //
 // Because PaintLayer is not allocated for SVG objects, SVG filters (both
 // software and hardware-accelerated) use a different code path to paint the
 // filters (SVGFilterPainter), but both code paths use the same abstraction for
 // painting non-hardware accelerated filters (FilterEffect). Hardware
 // accelerated CSS filters use CompositorFilterOperations, that is backed by cc.
 //
 class PaintLayerFilterInfo final : public GarbageCollectedFinalized<PaintLayerFilterInfo>, public SVGResourceClient {
     WTF_MAKE_NONCOPYABLE(PaintLayerFilterInfo);
     USING_GARBAGE_COLLECTED_MIXIN(PaintLayerFilterInfo);
 public:
     explicit PaintLayerFilterInfo(PaintLayer*);
     ~PaintLayerFilterInfo() override;
 
-    FilterEffectBuilder* builder() const { return m_builder.get(); }
-    void setBuilder(FilterEffectBuilder*);
+    FilterEffect* lastEffect() const { return m_lastEffect; }
+    void setLastEffect(FilterEffect*);
 
     void updateReferenceFilterClients(const FilterOperations&);
     void clearLayer() { m_layer = nullptr; }
 
     void filterNeedsInvalidation() override;
 
     DECLARE_TRACE();
 
 private:
     // |clearLayer| must be called before *m_layer becomes invalid.
     PaintLayer* m_layer;
-    Member<FilterEffectBuilder> m_builder;
+    Member<FilterEffect> m_lastEffect;
 };
 
 } // namespace blink
 
 
 #endif // PaintLayerFilterInfo_h