Move AAFillRect into CPP for templatization

src/gpu/batches/GrRectBatchFactory.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 GrRectBatchFactory_DEFINED
 #define GrRectBatchFactory_DEFINED
 
+#include "GrAAFillRectBatch.h"
 #include "GrColor.h"
 
 class GrBatch;
 class SkMatrix;
 struct SkRect;
 class SkStrokeRec;
 
 /*
  * A factory for returning batches which can draw rectangles.
  */
 namespace GrRectBatchFactory {
 
 GrBatch* CreateFillBW(GrColor color,
                       const SkMatrix& viewMatrix,
                       const SkRect& rect,
                       const SkRect* localRect,
                       const SkMatrix* localMatrix);
 
-GrBatch* CreateFillAA(GrColor color,
+static GrBatch* CreateFillAA(GrColor color,
                       const SkMatrix& viewMatrix,
                       const SkRect& rect,
-                      const SkRect& devRect);
+                      const SkRect& devRect) {
+    return GrAAFillRectBatch::Create(color, viewMatrix, rect, devRect);
+}
 
 GrBatch* CreateStrokeBW(GrColor color,
                         const SkMatrix& viewMatrix,
                         const SkRect& rect,
                         SkScalar strokeWidth,
                         bool snapToPixelCenters);
 
 GrBatch* CreateStrokeAA(GrColor,
                         const SkMatrix& viewMatrix,
                         const SkRect& rect,
                         const SkRect& devRect,
                         const SkStrokeRec& stroke);
 
 // First rect is outer; second rect is inner
 GrBatch* CreateFillNestedRectsAA(GrColor,
                                  const SkMatrix& viewMatrix,
                                  const SkRect rects[2]);
 
 };
 
 #endif