Revert[2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o…

src/utils/SkLua.cpp

Index: src/utils/SkLua.cpp
diff --git a/src/utils/SkLua.cpp b/src/utils/SkLua.cpp
index 56e2b41a454e5f81b22c81be895e07155aa5f56a..d0b6a4b1ac27d3b665b512b873d4b26cbc4ff0eb 100644
--- a/src/utils/SkLua.cpp
+++ b/src/utils/SkLua.cpp
@@ -1114,7 +1114,7 @@ static int lpaint_getColorFilter(lua_State* L) {
 
 static int lpaint_setColorFilter(lua_State* L) {
     SkPaint* paint = get_obj<SkPaint>(L, 1);
-    paint->setColorFilter(get_ref<SkColorFilter>(L, 2));
+    paint->setColorFilter(sk_ref_sp(get_ref<SkColorFilter>(L, 2)));
     return 0;
 }