Harmonize FilterEffect::mapRect and mapPaintRect

third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h

Index: third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h
diff --git a/third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h b/third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h
index 63ac1b1e947c6244393b4378665d8d2695eb2f6d..5e3884d7fc3e52625afc3618c13cf6d597d36722 100644
--- a/third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h
+++ b/third_party/WebKit/Source/platform/graphics/filters/SourceGraphic.h
@@ -32,10 +32,6 @@ public:
     static SourceGraphic* create(Filter*);
     ~SourceGraphic() override;
 
-    FloatRect determineAbsolutePaintRect(const FloatRect& requestedRect) const override;
-
-    FilterEffectType getFilterEffectType() const override { return FilterEffectTypeSourceInput; }
-
     TextStream& externalRepresentation(TextStream&, int indention) const override;
 
     void setSourceRect(const IntRect&);
@@ -43,6 +39,10 @@ public:
 private:
     explicit SourceGraphic(Filter*);
 
+    FilterEffectType getFilterEffectType() const override { return FilterEffectTypeSourceInput; }
+
+    FloatRect mapInputs(const FloatRect&) const override;
+
     IntRect m_sourceRect;
 };