remove DownSample imagefilter

fuzz/FilterFuzz.cpp

Index: fuzz/FilterFuzz.cpp
diff --git a/fuzz/FilterFuzz.cpp b/fuzz/FilterFuzz.cpp
index cf92eae4d52f099f43547f69f88175def74c885e..3255b4be4c686de248a29bad0fff9cfebe1cd484 100644
--- a/fuzz/FilterFuzz.cpp
+++ b/fuzz/FilterFuzz.cpp
@@ -41,7 +41,6 @@
 #include "SkPoint3.h"
 #include "SkRandom.h"
 #include "SkTableColorFilter.h"
-#include "SkTestImageFilters.h"
 #include "SkTileImageFilter.h"
 #include "SkTypeface.h"
 #include "SkXfermodeImageFilter.h"
@@ -541,7 +540,7 @@ static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) {
     }
 
     enum { ALPHA_THRESHOLD, MERGE, COLOR, LUT3D, BLUR, MAGNIFIER,
-           DOWN_SAMPLE, XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE,
+           XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE,
            DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW,
            MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, PAINT, NUM_FILTERS };
 
@@ -581,9 +580,6 @@ static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) {
                                               make_scalar(true),
                                               make_image_filter());
         break;
-    case DOWN_SAMPLE:
-        filter = SkDownSampleImageFilter::Make(make_scalar(), make_image_filter());
-        break;
     case XFERMODE:
         filter = SkXfermodeImageFilter::Make(SkXfermode::Make(make_xfermode()),
                                              make_image_filter(),