Add cc_proto library to gerrit proto.

Google-Bug-Id: b/302496556
Release-Notes: skip
Change-Id: I82aa77c6c69d8ba5d0d2badc27df1d35c23e36fd
diff --git a/proto/BUILD b/proto/BUILD
index 7aa761d..624568b 100644
--- a/proto/BUILD
+++ b/proto/BUILD
@@ -23,3 +23,9 @@
     visibility = ["//visibility:public"],
     deps = [":entities_proto"],
 )
+
+cc_proto_library(
+    name = "entities_cc_proto",
+    visibility = ["//visibility:public"],
+    deps = [":entities_proto"],
+)