Implement InterpolationMedium to filter animated images

Source/core/html/HTMLCanvasElement.h

Index: Source/core/html/HTMLCanvasElement.h
diff --git a/Source/core/html/HTMLCanvasElement.h b/Source/core/html/HTMLCanvasElement.h
index 99a1d1c9b5cb00587dd1c6470be6ac0f0140d061..fa8c45a47d6ccb08159bd6df9a23cfbd02b31988 100644
--- a/Source/core/html/HTMLCanvasElement.h
+++ b/Source/core/html/HTMLCanvasElement.h
@@ -33,9 +33,10 @@
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/Canvas2DLayerBridge.h"
+#include "platform/graphics/GraphicsTypes.h"
 #include "wtf/Forward.h"
 
-#define DefaultInterpolationQuality InterpolationMedium
+#define CanvasDefaultInterpolationQuality InterpolationLow
 
 namespace WebCore {
 
@@ -100,7 +101,7 @@ public:
     void didDraw(const FloatRect&);
     void notifyObserversCanvasChanged(const FloatRect&);
 
-    void paint(GraphicsContext*, const LayoutRect&, bool useLowQualityScale = false);
+    void paint(GraphicsContext*, const LayoutRect&);
 
     GraphicsContext* drawingContext() const;
     GraphicsContext* existingDrawingContext() const;