Rename GrBatch to GrOp

Change-Id: I27b6324f8040899fafeda23ca524bc54a4dbf090
Reviewed-on: https://skia-review.googlesource.com/5392
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/gm/convexpolyeffect.cpp b/gm/convexpolyeffect.cpp
index fdeef29..8805742 100644
--- a/gm/convexpolyeffect.cpp
+++ b/gm/convexpolyeffect.cpp
@@ -42,7 +42,7 @@
 namespace skiagm {
 class PolyBoundsBatch : public GrTestBatch {
 public:
-    DEFINE_BATCH_CLASS_ID
+    DEFINE_OP_CLASS_ID
 
     const char* name() const override { return "PolyBoundsBatch"; }