switch maskfilters to sk_sp

src/effects/SkBlurDrawLooper.cpp

Index: src/effects/SkBlurDrawLooper.cpp
diff --git a/src/effects/SkBlurDrawLooper.cpp b/src/effects/SkBlurDrawLooper.cpp
index 2578d092bbb7de3c204b68d41b00e2d0118ec473..30583747c9c101fe7004962cf0095e211db98397 100644
--- a/src/effects/SkBlurDrawLooper.cpp
+++ b/src/effects/SkBlurDrawLooper.cpp
@@ -34,7 +34,7 @@ void SkBlurDrawLooper::initEffects() {
                     SkBlurMaskFilter::kHighQuality_BlurFlag :
                     SkBlurMaskFilter::kNone_BlurFlag;
 
-        fBlur = SkBlurMaskFilter::Create(kNormal_SkBlurStyle, fSigma, flags);
+        fBlur = SkBlurMaskFilter::Make(kNormal_SkBlurStyle, fSigma, flags);
     } else {
         fBlur = nullptr;
     }
@@ -78,10 +78,6 @@ void SkBlurDrawLooper::flatten(SkWriteBuffer& buffer) const {
     buffer.write32(fBlurFlags);
 }
 
-SkBlurDrawLooper::~SkBlurDrawLooper() {
-    SkSafeUnref(fBlur);
-}
-
 bool SkBlurDrawLooper::asABlurShadow(BlurShadowRec* rec) const {
     if (fSigma <= 0 || (fBlurFlags & fBlurFlags & kIgnoreTransform_BlurFlag)) {
         return false;