Refactor subchannel_list code out of RR and use it in PF.
diff --git a/config.w32 b/config.w32
index 3535582..3feb06d 100644
--- a/config.w32
+++ b/config.w32
@@ -294,6 +294,7 @@
"third_party\\nanopb\\pb_encode.c " +
"src\\core\\ext\\filters\\client_channel\\resolver\\fake\\fake_resolver.cc " +
"src\\core\\ext\\filters\\client_channel\\lb_policy\\pick_first\\pick_first.cc " +
+ "src\\core\\ext\\filters\\client_channel\\lb_policy\\subchannel_list.cc " +
"src\\core\\ext\\filters\\client_channel\\lb_policy\\round_robin\\round_robin.cc " +
"src\\core\\ext\\filters\\client_channel\\resolver\\dns\\c_ares\\dns_resolver_ares.cc " +
"src\\core\\ext\\filters\\client_channel\\resolver\\dns\\c_ares\\grpc_ares_ev_driver_posix.cc " +