Add ReferenceCountedPtr class.
diff --git a/BUILD b/BUILD
index 5289023..9c93a5c 100644
--- a/BUILD
+++ b/BUILD
@@ -555,6 +555,12 @@
 )
 
 grpc_cc_library(
+    name = "reference_counted_ptr",
+    public_hdrs = ["src/core/lib/support/reference_counted_ptr.h"],
+    language = "c++",
+)
+
+grpc_cc_library(
     name = "grpc_base_c",
     srcs = [
         "src/core/lib/backoff/backoff.cc",