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

include/gpu/GrDrawContext.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 GrDrawContext_DEFINED
 #define GrDrawContext_DEFINED
 
 #include "GrColor.h"
 #include "SkRefCnt.h"
 #include "SkSurfaceProps.h"
 
-class GrBatch;
 class GrClip;
 class GrContext;
+class GrDrawBatch;
 class GrDrawTarget;
 class GrPaint;
 class GrPathProcessor;
 class GrPathRange;
 class GrPipelineBuilder;
 class GrRenderTarget;
 class GrStrokeInfo;
 class GrSurface;
 class GrTextContext;
 class SkDrawFilter;
@@ skipping 230 matching lines @@
                   const SkRect& oval,
                   const GrStrokeInfo& strokeInfo);
 
 
     /**
      * Draws a batch
      *
      * @param paint    describes how to color pixels.
      * @param batch    the batch to draw
      */
-    void drawBatch(GrRenderTarget*, const GrClip&, const GrPaint&, GrBatch*);
+    void drawBatch(GrRenderTarget*, const GrClip&, const GrPaint&, GrDrawBatch*);
 
 private:
     friend class GrAtlasTextContext; // for access to drawBatch
     friend class GrContext; // for ctor
 
     GrDrawContext(GrContext*, GrDrawTarget*, const SkSurfaceProps&);
 
     GrTextContext* createTextContext(GrRenderTarget*, const SkSurfaceProps&);
 
     // Checks if the context has been abandoned and if the rendertarget is owned by this context
     bool prepareToDraw(GrRenderTarget* rt);
 
     void internalDrawPath(GrDrawTarget*,
                           GrPipelineBuilder*,
                           const SkMatrix& viewMatrix,
                           GrColor,
                           bool useAA,
                           const SkPath&,
                           const GrStrokeInfo&);
 
     // This entry point allows the GrTextContext-derived classes to add their batches to
     // the drawTarget.
-    void drawBatch(GrPipelineBuilder* pipelineBuilder, GrBatch* batch);
+    void drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch);
 
     GrContext*          fContext;     // owning context -> no ref
     GrDrawTarget*       fDrawTarget;
     GrTextContext*      fTextContext; // lazily created
 
     SkSurfaceProps      fSurfaceProps;
 };
 
 #endif