add a ClassID function to GrBatch

src/gpu/batches/GrDrawPathBatch.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 GrDrawPathBatch_DEFINED
 #define GrDrawPathBatch_DEFINED
 
 #include "GrBatchFlushState.h"
 #include "GrDrawBatch.h"
 #include "GrGpu.h"
 #include "GrPath.h"
 #include "GrPathRendering.h"
 #include "GrPathProcessor.h"
 
 #include "SkTLList.h"
 
 class GrDrawPathBatchBase : public GrDrawBatch {
 public:
+    BATCH_CLASS_ID
+
     void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
         out->setKnownFourComponents(fColor);
     }
 
     void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
         out->setKnownSingleComponent(0xff);
     }
 
     void setStencilSettings(const GrStencilSettings& stencil) { fStencilSettings = stencil; }
 
@@ skipping 114 matching lines @@
 
 // Template this if we decide to support index types other than 16bit
 class GrDrawPathRangeBatch final : public GrDrawPathBatchBase {
 public:
     // This can't return a more abstracet type because we install the stencil settings late :(
     static GrDrawPathBatchBase* Create(const SkMatrix& viewMatrix, const SkMatrix& localMatrix,
                                        GrColor color, GrPathRangeDraw* pathRangeDraw) {
         return SkNEW_ARGS(GrDrawPathRangeBatch, (viewMatrix, localMatrix, color, pathRangeDraw));
     }
 
+    BATCH_CLASS_ID
+
     ~GrDrawPathRangeBatch() override;
 
     const char* name() const override { return "DrawPathRange"; }
 
     SkString dumpInfo() const override;
 
 private:
     inline bool isWinding() const;
 
     GrDrawPathRangeBatch(const SkMatrix& viewMatrix, const SkMatrix& localMatrix, GrColor color,
                          GrPathRangeDraw* pathRangeDraw);
 
     bool onCombineIfPossible(GrBatch* t, const GrCaps& caps) override;
 
     void onPrepare(GrBatchFlushState*) override {}
 
     void onDraw(GrBatchFlushState* state) override;
 
     typedef SkTLList<GrPathRangeDraw*> DrawList;
     DrawList    fDraws;
     int         fTotalPathCount;
     SkMatrix    fLocalMatrix;
 
     typedef GrDrawPathBatchBase INHERITED;
 };
 
 #endif