Add missing files
diff --git a/BUILD b/BUILD
index ca0a1c5..5a2e7a7 100644
--- a/BUILD
+++ b/BUILD
@@ -1132,6 +1132,7 @@
         "src/cpp/common/rpc_method.cc",
         "src/cpp/common/version_cc.cc",
         "src/cpp/server/async_generic_service.cc",
+        "src/cpp/server/channel_argument_option.cc",
         "src/cpp/server/create_default_thread_pool.cc",
         "src/cpp/server/dynamic_thread_pool.cc",
         "src/cpp/server/health/default_health_check_service.cc",
@@ -1173,6 +1174,7 @@
         "include/grpc++/grpc++.h",
         "include/grpc++/health_check_service_interface.h",
         "include/grpc++/impl/call.h",
+        "include/grpc++/impl/channel_argument_option.h",
         "include/grpc++/impl/client_unary_call.h",
         "include/grpc++/impl/codegen/core_codegen.h",
         "include/grpc++/impl/grpc_library.h",