Revert of switch colorfilters to sk_sp

src/effects/SkDropShadowImageFilter.cpp

Index: src/effects/SkDropShadowImageFilter.cpp
diff --git a/src/effects/SkDropShadowImageFilter.cpp b/src/effects/SkDropShadowImageFilter.cpp
index e32b89ee6df8d92cfd8ad1d8486e781a62fd4f49..deece35b3883fe9255ba9f0f926a3e1602093da3 100644
--- a/src/effects/SkDropShadowImageFilter.cpp
+++ b/src/effects/SkDropShadowImageFilter.cpp
@@ -79,9 +79,11 @@
     sigma.fX = SkMaxScalar(0, sigma.fX);
     sigma.fY = SkMaxScalar(0, sigma.fY);
     SkAutoTUnref<SkImageFilter> blurFilter(SkBlurImageFilter::Create(sigma.fX, sigma.fY));
+    SkAutoTUnref<SkColorFilter> colorFilter(
+        SkColorFilter::CreateModeFilter(fColor, SkXfermode::kSrcIn_Mode));
     SkPaint paint;
     paint.setImageFilter(blurFilter.get());
-    paint.setColorFilter(SkColorFilter::MakeModeFilter(fColor, SkXfermode::kSrcIn_Mode));
+    paint.setColorFilter(colorFilter.get());
     paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
     SkVector offsetVec = SkVector::Make(fDx, fDy);
     ctx.ctm().mapVectors(&offsetVec, 1);