Extracting the SVG Filter Reference implementation out of the FilterEffectRenderer into its own typ…

Source/core/rendering/FilterEffectRenderer.h

Index: Source/core/rendering/FilterEffectRenderer.h
diff --git a/Source/core/rendering/FilterEffectRenderer.h b/Source/core/rendering/FilterEffectRenderer.h
index 89bfdee33a5f5f46ed9e583dc9e2c41d0dae79a4..c63397974215b1577908e77f27cc7e8655400f20 100644
--- a/Source/core/rendering/FilterEffectRenderer.h
+++ b/Source/core/rendering/FilterEffectRenderer.h
@@ -43,7 +43,6 @@
 
 namespace WebCore {
 
-typedef Vector<RefPtr<FilterEffect> > FilterEffectList;
 class CachedShader;
 class CustomFilterProgram;
 class Document;
@@ -101,7 +100,6 @@ public:
     ImageBuffer* output() const { return lastEffect()->asImageBuffer(); }
 
     bool build(RenderObject* renderer, const FilterOperations&);
-    PassRefPtr<FilterEffect> buildReferenceFilter(RenderObject* renderer, PassRefPtr<FilterEffect> previousEffect, ReferenceFilterOperation*);
     bool updateBackingStoreRect(const FloatRect& filterRect);
     void allocateBackingStoreIfNeeded();
     void clearIntermediateResults();
@@ -114,19 +112,8 @@ public:
 
     bool hasCustomShaderFilter() const { return m_hasCustomShaderFilter; }
 private:
-    void setMaxEffectRects(const FloatRect& effectRect)
-    {
-        for (size_t i = 0; i < m_effects.size(); ++i) {
-            RefPtr<FilterEffect> effect = m_effects.at(i);
-            effect->setMaxEffectRect(effectRect);
-        }
-    }
-    PassRefPtr<FilterEffect> lastEffect() const
-    {
-        if (m_effects.size() > 0)
-            return m_effects.last();
-        return 0;
-    }
+    void setMaxEffectRects(const FloatRect&);
+    PassRefPtr<FilterEffect> lastEffect() const { return m_lastEffect.get(); }
 
     FilterEffectRenderer();
     virtual ~FilterEffectRenderer();
@@ -134,8 +121,8 @@ private:
     FloatRect m_sourceDrawingRegion;
     FloatRect m_filterRegion;
     
-    FilterEffectList m_effects;
     RefPtr<SourceGraphic> m_sourceGraphic;
+    RefPtr<FilterEffect> m_lastEffect;
     
     IntRectExtent m_outsets;