Add benchmarks of closures, combiners, exec_ctx primitives
diff --git a/build.yaml b/build.yaml
index 2fbaa2e..42e599e 100644
--- a/build.yaml
+++ b/build.yaml
@@ -2984,6 +2984,23 @@
   - grpc
   - gpr_test_util
   - gpr
+- name: bm_closure
+  build: test
+  language: c++
+  src:
+  - test/cpp/microbenchmarks/bm_closure.cc
+  deps:
+  - benchmark
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+  args:
+  - --benchmark_min_time=0
+  platforms:
+  - mac
+  - linux
+  - posix
 - name: bm_fullstack
   build: test
   language: c++