Use sk_sp-based APIs for SkColorFilter

ui/gfx/skia_util.cc

Index: ui/gfx/skia_util.cc
diff --git a/ui/gfx/skia_util.cc b/ui/gfx/skia_util.cc
index 7d554696ad4cdba237a609da569d689ef8f5fc03..975027cab79a602b6d5acd581873b60ea81838f5 100644
--- a/ui/gfx/skia_util.cc
+++ b/ui/gfx/skia_util.cc
@@ -165,13 +165,12 @@ skia::RefPtr<SkDrawLooper> CreateShadowDrawLooper(
         SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
                                  RadiusToSigma(shadow.blur() / 2),
                                  SkBlurMaskFilter::kHighQuality_BlurFlag));
-    skia::RefPtr<SkColorFilter> color_filter = skia::AdoptRef(
-        SkColorFilter::CreateModeFilter(shadow.color(),
-                                        SkXfermode::kSrcIn_Mode));
 
     SkPaint* paint = looper_builder.addLayer(layer_info);
     paint->setMaskFilter(blur_mask.get());
-    paint->setColorFilter(color_filter.get());
+    paint->setColorFilter(
+        SkColorFilter::MakeModeFilter(shadow.color(),
+                                      SkXfermode::kSrcIn_Mode));
   }
 
   return skia::AdoptRef<SkDrawLooper>(looper_builder.detachLooper());