add a ClassID function to GrBatch

src/gpu/batches/GrTessellatingPathRenderer.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTessellatingPathRenderer.h"
 
 #include "GrBatchFlushState.h"
@@ skipping 1367 matching lines @@
 bool GrTessellatingPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
     // This path renderer can draw all fill styles, all stroke styles except hairlines, but does
     // not do antialiasing. It can do convex and concave paths, but we'll leave the convex ones to
     // simpler algorithms.
     return !IsStrokeHairlineOrEquivalent(*args.fStroke, *args.fViewMatrix, nullptr) &&
            !args.fAntiAlias && !args.fPath->isConvex();
 }
 
 class TessellatingPathBatch : public GrVertexBatch {
 public:
-
     static GrDrawBatch* Create(const GrColor& color,
                                const SkPath& path,
                                const GrStrokeInfo& stroke,
                                const SkMatrix& viewMatrix,
                                SkRect clipBounds) {
         return new TessellatingPathBatch(color, path, stroke, viewMatrix, clipBounds);
     }
 
+    BATCH_CLASS_ID
+
     const char* name() const override { return "TessellatingPathBatch"; }
 
     void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
         out->setKnownFourComponents(fColor);
     }
 
     void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
         out->setUnknownSingleComponent();
     }
 
@@ skipping 245 matching lines @@
     bool result = viewMatrix.invert(&vmi);
     if (!result) {
         SkFAIL("Cannot invert matrix\n");
     }
     vmi.mapRect(&clipBounds);
     GrStrokeInfo strokeInfo = GrTest::TestStrokeInfo(random);
     return TessellatingPathBatch::Create(color, path, strokeInfo, viewMatrix, clipBounds);
 }
 
 #endif