Make GrStyle more sk_sp savy

src/gpu/GrStyle.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrStyle.h"
 
-void GrStyle::initPathEffect(SkPathEffect* pe) {
+void GrStyle::initPathEffect(sk_sp<SkPathEffect> pe) {
     if (!pe) {
         fDashInfo.fType = SkPathEffect::kNone_DashType;
         return;
     }
     SkPathEffect::DashInfo info;
     if (SkPathEffect::kDash_DashType == pe->asADash(&info)) {
         if (fStrokeRec.getStyle() == SkStrokeRec::kFill_Style) {
             fPathEffect.reset(nullptr);
         } else {
-            fPathEffect.reset(SkSafeRef(pe));
+            fPathEffect = std::move(pe);
             fDashInfo.fType = SkPathEffect::kDash_DashType;
             fDashInfo.fIntervals.reset(info.fCount);
             fDashInfo.fPhase = info.fPhase;
             info.fIntervals = fDashInfo.fIntervals.get();
             pe->asADash(&info);
             return;
         }
     } else {
-        fPathEffect.reset(SkSafeRef(pe));
+        fPathEffect = std::move(pe);
     }
     fDashInfo.fType = SkPathEffect::kNone_DashType;
     fDashInfo.fIntervals.reset(0);
 }