Create append methods in batch namespaces

src/gpu/batches/GrAAStrokeRectBatch.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 GrAAStrokeRectBatch_DEFINED
 #define GrAAStrokeRectBatch_DEFINED
 
 #include "GrColor.h"
 
+class GrBatch;
 class GrDrawBatch;
 class GrResourceProvider;
 class SkMatrix;
 struct SkRect;
 
 namespace GrAAStrokeRectBatch {
 
 GrDrawBatch* Create(GrColor color,
                     const SkMatrix& viewMatrix,
                     const SkRect& devOutside,
                     const SkRect& devOutsideAssist,
                     const SkRect& devInside,
                     bool miterStroke);
 
+bool Append(GrBatch*,
+            GrColor color,
+            const SkMatrix& viewMatrix,
+            const SkRect& devOutside,
+            const SkRect& devOutsideAssist,
+            const SkRect& devInside,
+            bool miterStroke);
+
 };
 
 #endif