Revert of switch patheffects over to sk_sp

gm/pathcontourstart.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 
 #include "SkDashPathEffect.h"
 #include "SkPaint.h"
 #include "SkPath.h"
 #include "SkRRect.h"
 
 namespace skiagm {
 
 class ContourStartGM : public GM {
 public:
     ContourStartGM() {
         const SkScalar kMaxDashLen = 100;
         const SkScalar kDashGrowth = 1.2f;
 
         SkSTArray<100, SkScalar> intervals;
         for (SkScalar len = 1; len < kMaxDashLen; len *= kDashGrowth) {
             intervals.push_back(len);
             intervals.push_back(len);
         }
 
+        SkAutoTUnref<SkPathEffect> effect(
+            SkDashPathEffect::Create(intervals.begin(), intervals.count(), 0));
+
         fDashPaint.setAntiAlias(true);
         fDashPaint.setStyle(SkPaint::kStroke_Style);
         fDashPaint.setStrokeWidth(6);
         fDashPaint.setColor(0xff008000);
-        fDashPaint.setPathEffect(SkDashPathEffect::Make(intervals.begin(), intervals.count(), 0));
+        fDashPaint.setPathEffect(effect);
 
         fPointsPaint.setColor(0xff800000);
         fPointsPaint.setStrokeWidth(3);
 
         fRect = SkRect::MakeLTRB(10, 10, 100, 70);
     }
 
 protected:
     SkString onShortName() override {
         return SkString("contour_start");
@@ skipping 77 matching lines @@
         }
     }
 
     typedef GM INHERITED;
 };
 
 DEF_GM( return new ContourStartGM(); )
 
 } // namespace skiagm