Introduce GrBatch subclasses GrDrawBatch and GrVertexBatch to prepare for non-drawing batches

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 "GrBatch.h"
 #include "GrColor.h"
 #include "GrTypes.h"
 #include "SkMatrix.h"
 #include "SkRect.h"
 
-class GrAAStrokeRectBatch : public GrBatch {
+class GrAAStrokeRectBatch : public GrVertexBatch {
 public:
     // TODO support AA rotated stroke rects by copying around view matrices
     struct Geometry {
         GrColor fColor;
         SkRect fDevOutside;
         SkRect fDevOutsideAssist;
         SkRect fDevInside;
         bool fMiterStroke;
     };
 
-    static GrBatch* Create(const Geometry& geometry, const SkMatrix& viewMatrix) {
+    static GrDrawBatch* Create(const Geometry& geometry, const SkMatrix& viewMatrix) {
         return SkNEW_ARGS(GrAAStrokeRectBatch, (geometry, viewMatrix));
     }
 
     const char* name() const override { return "AAStrokeRect"; }
 
     void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
         // When this is called on a batch, there is only one geometry bundle
         out->setKnownFourComponents(fGeoData[0].fColor);
     }
 
@@ skipping 62 matching lines @@
         bool fMiterStroke;
         bool fCanTweakAlphaForCoverage;
     };
 
     BatchTracker fBatch;
     SkSTArray<1, Geometry, true> fGeoData;
 };
 
 
 #endif