add a ClassID function to GrBatch

src/gpu/GrOvalRenderer.cpp

Index: src/gpu/GrOvalRenderer.cpp
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index 8eed38233b699ae837859050dffb52094272db71..40b3c506ac2d4cb359b932589936240e48630759 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -615,6 +615,8 @@ public:
         SkRect fDevBounds;
     };
 
+    BATCH_CLASS_ID
+
     static GrDrawBatch* Create(const Geometry& geometry) { return new CircleBatch(geometry); }
 
     const char* name() const override { return "CircleBatch"; }
@@ -832,6 +834,8 @@ public:
         SkRect fDevBounds;
     };
 
+    BATCH_CLASS_ID
+
     static GrDrawBatch* Create(const Geometry& geometry) { return new EllipseBatch(geometry); }
 
     const char* name() const override { return "EllipseBatch"; }
@@ -1098,6 +1102,8 @@ public:
         SkRect fBounds;
     };
 
+    BATCH_CLASS_ID
+
     static GrDrawBatch* Create(const Geometry& geometry, const SkRect& bounds) {
         return new DIEllipseBatch(geometry, bounds);
     }
@@ -1450,6 +1456,8 @@ public:
         SkRect fDevBounds;
     };
 
+    BATCH_CLASS_ID
+
     static GrDrawBatch* Create(const Geometry& geometry) {
         return new RRectCircleRendererBatch(geometry);
     }
@@ -1626,6 +1634,8 @@ public:
         SkRect fDevBounds;
     };
 
+    BATCH_CLASS_ID
+
     static GrDrawBatch* Create(const Geometry& geometry) {
         return new RRectEllipseRendererBatch(geometry);
     }