Minor GrRenderTarget retraction

src/gpu/GrYUVProvider.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrYUVProvider_DEFINED
 #define GrYUVProvider_DEFINED
 
@@ skipping 17 matching lines @@
     virtual ~GrYUVProvider() {}
 
     /**
      *  On success, this returns a texture that has converted the YUV data from the provider
      *  into a form that is supported by the GPU (typically transformed into RGB). If useCache
      *  is true, then the texture will automatically have a key added, so it can be retrieved
      *  from the cache (assuming it is requested by a provider w/ the same genID).
      *
      *  On failure (e.g. the provider had no data), this returns NULL.
      */
-    GrTexture* refAsTexture(GrContext*, const GrSurfaceDesc&, bool useCache);
+    sk_sp<GrTexture> refAsTexture(GrContext*, const GrSurfaceDesc&, bool useCache);
 
     virtual uint32_t onGetID() = 0;
 
     // These are not meant to be called by a client, only by the implementation
 
     /**
      *  If decoding to YUV is supported, this returns true.  Otherwise, this
      *  returns false and does not modify any of the parameters.
      *
      *  @param sizeInfo   Output parameter indicating the sizes and required
      *                    allocation widths of the Y, U, and V planes.
      *  @param colorSpace Output parameter.
      */
     virtual bool onQueryYUV8(SkYUVSizeInfo* sizeInfo, SkYUVColorSpace* colorSpace) const = 0;
 
     /**
      *  Returns true on success and false on failure.
      *  This always attempts to perform a full decode.  If the client only
      *  wants size, it should call onQueryYUV8().
      *
      *  @param sizeInfo   Needs to exactly match the values returned by the
      *                    query, except the WidthBytes may be larger than the
      *                    recommendation (but not smaller).
      *  @param planes     Memory for each of the Y, U, and V planes.
      */
     virtual bool onGetYUV8Planes(const SkYUVSizeInfo& sizeInfo, void* planes[3]) = 0;
 };
 
 #endif