Bring sk_sp to GrDrawContext

gm/constcolorprocessor.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.
  */
 
 // This test only works with the GPU backend.
 
 #include "gm.h"
@@ skipping 39 matching lines @@
         GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget();
         if (nullptr == rt) {
             return;
         }
         GrContext* context = rt->getContext();
         if (nullptr == context) {
             skiagm::GM::DrawGpuOnlyMessage(canvas);
             return;
         }
 
-        SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(rt));
+        sk_sp<GrDrawContext> drawContext(context->drawContext(sk_ref_sp(rt)));
         if (!drawContext) {
             return;
         }
 
         static const GrColor kColors[] = {
             0xFFFFFFFF,
             0xFFFF00FF,
             0x80000000,
             0x00000000,
         };
@@ skipping 118 matching lines @@
     typedef GM INHERITED;
 };
 
 const SkScalar ConstColorProcessor::kPad = 10.f;
 const SkScalar ConstColorProcessor::kRectSize = 20.f;
 
 DEF_GM(return new ConstColorProcessor;)
 }
 
 #endif