Reland of add a ClassID function to GrBatch

src/gpu/batches/GrTessellatingPathRenderer.cpp

Index: src/gpu/batches/GrTessellatingPathRenderer.cpp
diff --git a/src/gpu/batches/GrTessellatingPathRenderer.cpp b/src/gpu/batches/GrTessellatingPathRenderer.cpp
index 46fa280cfd86c6e67a429c547a1e987e1af6f135..901d38369cfe072496a306b063544a8846a98b39 100644
--- a/src/gpu/batches/GrTessellatingPathRenderer.cpp
+++ b/src/gpu/batches/GrTessellatingPathRenderer.cpp
@@ -1385,6 +1385,7 @@
 
 class TessellatingPathBatch : public GrVertexBatch {
 public:
+    DEFINE_BATCH_CLASS_ID
 
     static GrDrawBatch* Create(const GrColor& color,
                                const SkPath& path,
@@ -1587,13 +1588,12 @@
                           const GrStrokeInfo& stroke,
                           const SkMatrix& viewMatrix,
                           const SkRect& clipBounds)
-      : fColor(color)
+      : INHERITED(ClassID())
+      , fColor(color)
       , fPath(path)
       , fStroke(stroke)
       , fViewMatrix(viewMatrix)
       , fClipBounds(clipBounds) {
-        this->initClassID<TessellatingPathBatch>();
-
         fBounds = path.getBounds();
         if (!stroke.isFillStyle()) {
             SkScalar radius = SkScalarHalf(stroke.getWidth());
@@ -1614,6 +1614,8 @@
     SkMatrix                fViewMatrix;
     SkRect                  fClipBounds; // in source space
     GrPipelineOptimizations fPipelineInfo;
+
+    typedef GrVertexBatch INHERITED;
 };
 
 bool GrTessellatingPathRenderer::onDrawPath(const DrawPathArgs& args) {