Revert of switch patheffects over to sk_sp (patchset #5 id:80001 of https://codereview.chromium.org/1813553005/ )

Reason for revert:
some build breaks, possibly related to paint having to know what a patheffect is

Original issue's description:
> switch patheffects over to sk_sp
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1813553005
>
> Committed: https://skia.googlesource.com/skia/+/9fbee18f691a0afed1e38a851048ce06063505ed

TBR=caryclark@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1817543002
diff --git a/src/effects/SkLayerDrawLooper.cpp b/src/effects/SkLayerDrawLooper.cpp
index 83f21e5..bca65ef 100644
--- a/src/effects/SkLayerDrawLooper.cpp
+++ b/src/effects/SkLayerDrawLooper.cpp
@@ -93,7 +93,7 @@
     }
 
     if (bits & kPathEffect_Bit) {
-        dst->setPathEffect(sk_ref_sp(src.getPathEffect()));
+        dst->setPathEffect(src.getPathEffect());
     }
     if (bits & kMaskFilter_Bit) {
         dst->setMaskFilter(src.getMaskFilter());