Implement LB policy updates
diff --git a/config.m4 b/config.m4
index 3b9cac1..6a5cc61 100644
--- a/config.m4
+++ b/config.m4
@@ -305,6 +305,7 @@
     third_party/nanopb/pb_common.c \
     third_party/nanopb/pb_decode.c \
     third_party/nanopb/pb_encode.c \
+    src/core/ext/filters/client_channel/resolver/fake/fake_resolver.c \
     src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.c \
     src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.c \
     src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c \
@@ -654,6 +655,7 @@
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/client_channel/lb_policy/round_robin)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/client_channel/resolver/dns/c_ares)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/client_channel/resolver/dns/native)
+  PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/client_channel/resolver/fake)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/client_channel/resolver/sockaddr)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/deadline)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/filters/http)