Add gm that tests shaded stroked rectangles.

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
 
@@ skipping 11 matching lines @@
 GrDrawBatch* CreateFillBetweenRects(GrColor color,
                                     const SkMatrix& viewMatrix,
                                     const SkRect& devOutside,
                                     const SkRect& devInside);
 
 GrDrawBatch* Create(GrColor color,
                     const SkMatrix& viewMatrix,
                     const SkRect& rect,
                     const SkStrokeRec& stroke);
 
-bool Append(GrBatch*,
-            GrColor color,
-            const SkMatrix& viewMatrix,
-            const SkRect& rect,
-            const SkStrokeRec& stroke);
-
-};
+}
 
 #endif