Bring sk_sp to GrDrawContext

gm/texturedomaineffect.cpp

 /*
  * Copyright 2014 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 62 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;
         }
 
         SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fBmp,
                                                                  GrTextureParams::ClampNoFilter()));
         if (!texture) {
             return;
         }
 
@@ skipping 59 matching lines @@
 };
 
 // Windows builds did not like SkScalar initialization in class :(
 const SkScalar TextureDomainEffect::kDrawPad = 10.f;
 const SkScalar TextureDomainEffect::kTestPad = 10.f;
 
 DEF_GM(return new TextureDomainEffect;)
 }
 
 #endif