Switch SkPaintImageFilter over to new onFilterImage interface

include/effects/SkPaintImageFilter.h

Index: include/effects/SkPaintImageFilter.h
diff --git a/include/effects/SkPaintImageFilter.h b/include/effects/SkPaintImageFilter.h
index 74f700f590fe2522a6ec6bc5998ef3798fe2fb7a..285d0f1686f63d659183604dfb1cdb63f83121e3 100644
--- a/include/effects/SkPaintImageFilter.h
+++ b/include/effects/SkPaintImageFilter.h
@@ -31,8 +31,8 @@ public:
 
 protected:
     void flatten(SkWriteBuffer&) const override;
-    bool onFilterImageDeprecated(Proxy*, const SkBitmap& src, const Context&, SkBitmap* result,
-                                 SkIPoint* loc) const override;
+    SkSpecialImage* onFilterImage(SkSpecialImage* source, const Context&,
+                                  SkIPoint* offset) const override;
 
 private:
     SkPaintImageFilter(const SkPaint& paint, const CropRect* rect);