Code review changes.
diff --git a/src/core/ext/client_channel/http_connect_handshaker.h b/src/core/ext/client_channel/http_connect_handshaker.h
index 8b1735b..3059d55 100644
--- a/src/core/ext/client_channel/http_connect_handshaker.h
+++ b/src/core/ext/client_channel/http_connect_handshaker.h
@@ -34,7 +34,8 @@
#ifndef GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
#define GRPC_CORE_EXT_CLIENT_CHANNEL_HTTP_CONNECT_HANDSHAKER_H
-/// Channel arg indicating HTTP CONNECT server (string).
+/// Channel arg indicating the server in HTTP CONNECT request (string).
+/// The presence of this arg triggers the use of HTTP CONNECT.
#define GRPC_ARG_HTTP_CONNECT_SERVER "grpc.http_connect_server"
/// Channel arg indicating HTTP CONNECT headers (string).