Reland of add a ClassID function to GrBatch

src/gpu/batches/GrDrawAtlasBatch.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 "GrDrawAtlasBatch.h"
 #include "GrBatchFlushState.h"
 #include "GrBatchTest.h"
@@ skipping 59 matching lines @@
         
         size_t allocSize = args.fVerts.count();
         memcpy(vertPtr, args.fVerts.begin(), allocSize);
         vertPtr += allocSize;
     }
     helper.recordDraw(target);
 }
 
 GrDrawAtlasBatch::GrDrawAtlasBatch(const Geometry& geometry, const SkMatrix& viewMatrix,
                                    int spriteCount, const SkRSXform* xforms, const SkRect* rects,
-                                   const SkColor* colors) {
-    this->initClassID<GrDrawAtlasBatch>();
+                                   const SkColor* colors)
+    : INHERITED(ClassID()) {
     SkASSERT(xforms);
     SkASSERT(rects);
     
     fViewMatrix = viewMatrix;
     Geometry& installedGeo = fGeoData.push_back(geometry);
     
     // Figure out stride and offsets
     // Order within the vertex is: position [color] texCoord
     size_t texOffset = sizeof(SkPoint);
     size_t vertexStride = 2*sizeof(SkPoint);
@@ skipping 157 matching lines @@
     
     SkMatrix viewMatrix = GrTest::TestMatrix(random);
     
     GrDrawAtlasBatch::Geometry geometry;
     geometry.fColor = GrRandomColor(random);
     return GrDrawAtlasBatch::Create(geometry, viewMatrix, spriteCount, xforms.begin(),
                                     texRects.begin(), hasColors ? colors.begin() : nullptr);
 }
 
 #endif