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

Source/core/platform/graphics/filters/ReferenceFilter.h

Index: Source/core/platform/graphics/filters/ReferenceFilter.h
diff --git a/Source/core/rendering/style/StyleCustomFilterProgramCache.h b/Source/core/platform/graphics/filters/ReferenceFilter.h
similarity index 60%
copy from Source/core/rendering/style/StyleCustomFilterProgramCache.h
copy to Source/core/platform/graphics/filters/ReferenceFilter.h
index eb30517001047900a37647c5c2243ce06e456800..aa07dd2657c28e3cf2c8296a236477c8f4b5b665 100644
--- a/Source/core/rendering/style/StyleCustomFilterProgramCache.h
+++ b/Source/core/platform/graphics/filters/ReferenceFilter.h
@@ -27,37 +27,43 @@
  * SUCH DAMAGE.
  */
 
-#ifndef StyleCustomFilterProgramCache_h
-#define StyleCustomFilterProgramCache_h
+#ifndef ReferenceFilter_h
+#define ReferenceFilter_h
 
-#include "core/platform/graphics/filters/custom/CustomFilterProgramInfo.h"
-#include <wtf/FastAllocBase.h>
-#include <wtf/HashMap.h>
+#include "core/platform/graphics/FloatRect.h"
+#include "core/platform/graphics/filters/Filter.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
-class StyleCustomFilterProgram;
-class CustomFilterProgramInfo;
+class ReferenceFilterOperation;
+class SourceGraphic;
+class FilterEffect;
 
-class StyleCustomFilterProgramCache {
-    WTF_MAKE_FAST_ALLOCATED;
+class ReferenceFilter: public Filter {
 public:
-    StyleCustomFilterProgramCache();
-    ~StyleCustomFilterProgramCache();
+    static PassRefPtr<ReferenceFilter> create()
+    {
+        return adoptRef(new ReferenceFilter());
+    }
 
-    // Lookups a StyleCustomFilterProgram that has similar parameters with the specified program.
-    StyleCustomFilterProgram* lookup(StyleCustomFilterProgram*) const;
-    StyleCustomFilterProgram* lookup(const CustomFilterProgramInfo&) const;
+    virtual FloatRect sourceImageRect() const { return FloatRect(); };
+    virtual FloatRect filterRegion() const  { return FloatRect(); }
 
-    void add(StyleCustomFilterProgram*);
-    void remove(StyleCustomFilterProgram*);
+    void setLastEffect(PassRefPtr<FilterEffect>);
+    FilterEffect* lastEffect() const { return m_lastEffect.get(); }
+
+    SourceGraphic* sourceGraphic() const { return m_sourceGraphic.get(); }
 
 private:
-    typedef HashMap<CustomFilterProgramInfo, StyleCustomFilterProgram*> CacheMap;
-    CacheMap m_cache;
-};
+    ReferenceFilter();
+    ~ReferenceFilter();
 
-} // namespace WebCore
+    RefPtr<SourceGraphic> m_sourceGraphic;
+    RefPtr<FilterEffect> m_lastEffect;
+};
 
+}
 
-#endif // StyleCustomFilterProgramCache_h
+#endif // ReferenceFilter_h