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

src/gpu/GrBufferedDrawTarget.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrBufferedDrawTarget_DEFINED
 #define GrBufferedDrawTarget_DEFINED
 
@@ skipping 60 matching lines @@
 
     void unallocState(StateForPathDraw* state) {
         state->unref();
         fPipelineBuffer.unalloc(state);
     }
 
     void onReset() override;
     void onFlush() override;
 
     // overrides from GrDrawTarget
-    void onDrawBatch(GrBatch*) override;
+    void onDrawBatch(GrDrawBatch*) override;
     void onStencilPath(const GrPipelineBuilder&,
                        const GrPathProcessor*,
                        const GrPath*,
                        const GrScissorState&,
                        const GrStencilSettings&) override;
     void onDrawPath(const GrPathProcessor*,
                     const GrPath*,
                     const GrStencilSettings&,
                     const PipelineInfo&) override;
     void onDrawPaths(const GrPathProcessor*,
@@ skipping 10 matching lines @@
                  GrRenderTarget* renderTarget) override;
     void onCopySurface(GrSurface* dst,
                        GrSurface* src,
                        const SkIRect& srcRect,
                        const SkIPoint& dstPoint) override;
 
     bool isIssued(uint32_t drawID) override { return drawID != fDrawID; }
 
     StateForPathDraw* SK_WARN_UNUSED_RESULT createStateForPathDraw(
         const GrPrimitiveProcessor*,
-        const GrDrawTarget::PipelineInfo&,
+        const PipelineInfo&,
         GrPipelineOptimizations* opts);
 
     // TODO: Use a single allocator for commands and records
     enum {
         kPathIdxBufferMinReserve     = 2 * 64,  // 64 uint16_t's
         kPathXformBufferMinReserve   = 2 * 64,  // 64 two-float transforms
         kPipelineBufferMinReserve    = 32 * sizeof(StateForPathDraw),
     };
 
     // every 100 flushes we should reset our fPipelineBuffer to prevent us from holding at a
     // highwater mark
     static const int kPipelineBufferHighWaterMark = 100;
 
     SkAutoTDelete<GrCommandBuilder>     fCommands;
     SkChunkAlloc                        fPathIndexBuffer;
     SkChunkAlloc                        fPathTransformBuffer;
     SkChunkAlloc                        fPipelineBuffer;
     uint32_t                            fDrawID;
     SkAutoTUnref<StateForPathDraw>      fPrevState;
 
     typedef GrClipTarget INHERITED;
 };
 
 #endif