Bring sk_sp to GrDrawContext

src/gpu/GrYUVProvider.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 "GrContext.h"
 #include "GrDrawContext.h"
 #include "GrYUVProvider.h"
@@ skipping 119 matching lines @@
                                         GrYUVEffect::CreateYUVToRGB(yuvTextures[0],
                                                                     yuvTextures[1],
                                                                     yuvTextures[2],
                                                                     yuvInfo.fSizeInfo.fSizes,
                                                                     yuvInfo.fColorSpace));
     paint.addColorFragmentProcessor(yuvToRgbProcessor);
     paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
     const SkRect r = SkRect::MakeIWH(yuvInfo.fSizeInfo.fSizes[SkYUVSizeInfo::kY].fWidth,
             yuvInfo.fSizeInfo.fSizes[SkYUVSizeInfo::kY].fHeight);
 
-    SkAutoTUnref<GrDrawContext> drawContext(ctx->drawContext(renderTarget));
+    sk_sp<GrDrawContext> drawContext(ctx->drawContext(sk_ref_sp(renderTarget)));
     if (!drawContext) {
         return nullptr;
     }
 
     drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), r);
 
     return result.release();
 }