Update Morphology image filter to store its type

src/effects/SkMorphologyImageFilter.cpp

Index: src/effects/SkMorphologyImageFilter.cpp
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 6abd1fc2365eac1e99f16d43632940411cd5a638..7b3a86cbc2cf3fcc29b1b5d610dd72f6dd701f20 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -28,11 +28,13 @@
 #include "glsl/GrGLSLUniformHandler.h"
 #endif
 
-SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX,
+SkMorphologyImageFilter::SkMorphologyImageFilter(Op op,
+                                                 int radiusX,
                                                  int radiusY,
                                                  SkImageFilter* input,
                                                  const CropRect* cropRect)
     : INHERITED(1, &input, cropRect)
+    , fOp(op)
     , fRadius(SkISize::Make(radiusX, radiusY)) {
 }
 
@@ -515,10 +517,9 @@ static sk_sp<SkSpecialImage> apply_morphology(SkSpecialImage* input,
 }
 #endif
 
-sk_sp<SkSpecialImage> SkMorphologyImageFilter::filterImageGeneric(bool dilate,
-                                                                  SkSpecialImage* source,
-                                                                  const Context& ctx,
-                                                                  SkIPoint* offset) const {
+sk_sp<SkSpecialImage> SkMorphologyImageFilter::onFilterImage(SkSpecialImage* source,
+                                                             const Context& ctx,
+                                                             SkIPoint* offset) const {
     SkIPoint inputOffset = SkIPoint::Make(0, 0);
     sk_sp<SkSpecialImage> input(this->filterInput(0, source, ctx, &inputOffset));
     if (!input) {
@@ -552,8 +553,8 @@ sk_sp<SkSpecialImage> SkMorphologyImageFilter::filterImageGeneric(bool dilate,
 
 #if SK_SUPPORT_GPU
     if (input->peekTexture()) {
-        auto type = dilate ? GrMorphologyEffect::kDilate_MorphologyType
-                           : GrMorphologyEffect::kErode_MorphologyType;
+        auto type = (kDilate_Op == fOp) ? GrMorphologyEffect::kDilate_MorphologyType
+                                        : GrMorphologyEffect::kErode_MorphologyType;
         sk_sp<SkSpecialImage> result(apply_morphology(input.get(), srcBounds, type,
                                                       SkISize::Make(width, height)));
         if (result) {
@@ -586,7 +587,7 @@ sk_sp<SkSpecialImage> SkMorphologyImageFilter::filterImageGeneric(bool dilate,
 
     SkMorphologyImageFilter::Proc procX, procY;
 
-    if (dilate) {
+    if (kDilate_Op == fOp) {
         procX = SkOpts::dilate_x;
         procY = SkOpts::dilate_y;
     } else {
@@ -622,14 +623,3 @@ sk_sp<SkSpecialImage> SkMorphologyImageFilter::filterImageGeneric(bool dilate,
                                           SkIRect::MakeWH(bounds.width(), bounds.height()),
                                           dst);
 }
-
-sk_sp<SkSpecialImage> SkDilateImageFilter::onFilterImage(SkSpecialImage* source, const Context& ctx,
-                                                         SkIPoint* offset) const {
-    return this->filterImageGeneric(true, source, ctx, offset);
-}
-
-sk_sp<SkSpecialImage> SkErodeImageFilter::onFilterImage(SkSpecialImage* source, const Context& ctx,
-                                                        SkIPoint* offset) const {
-    return this->filterImageGeneric(false, source, ctx, offset);
-}
-