Revert of add a ClassID function to GrBatch

tests/GrPorterDuffTest.cpp

Index: tests/GrPorterDuffTest.cpp
diff --git a/tests/GrPorterDuffTest.cpp b/tests/GrPorterDuffTest.cpp
index a61ab5484ba401a6027bbc6aa3089d26ffed9527..1328272a6a5e87fb749b5315fd0ec9b66bda4698 100644
--- a/tests/GrPorterDuffTest.cpp
+++ b/tests/GrPorterDuffTest.cpp
@@ -1093,13 +1093,7 @@
 }
 
 static void test_lcd_coverage_fallback_case(skiatest::Reporter* reporter, const GrCaps& caps) {
-    class TestLCDCoverageBatch: public GrVertexBatch {
-    public:
-        DEFINE_BATCH_CLASS_ID
-
-        TestLCDCoverageBatch() : INHERITED(ClassID()) {}
-
-    private:
+    class : public GrVertexBatch {
         void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
             out->setKnownFourComponents(GrColorPackRGBA(123, 45, 67, 221));
         }
@@ -1114,7 +1108,6 @@
         bool onCombineIfPossible(GrBatch*, const GrCaps&) override  { return false; }
         void onPrepareDraws(Target*) override {};
 
-        typedef GrVertexBatch INHERITED;
     } testLCDCoverageBatch;
 
     GrProcOptInfo colorPOI, covPOI;