Check for xfer barriers in GrBatch, auto-issue barriers in GrGpu

src/gpu/batches/GrAAFillRectBatch.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 GrAAFillRectBatch_DEFINED
 #define GrAAFillRectBatch_DEFINED
 
 #include "GrColor.h"
 
 class GrBatch;
 class SkMatrix;
 struct SkRect;
 
 namespace GrAAFillRectBatch {
-
 GrBatch* Create(GrColor color,
                 const SkMatrix& viewMatrix,
                 const SkRect& rect,
                 const SkRect& devRect);
-
 };
 
 #endif