Add back native resolver
diff --git a/config.m4 b/config.m4
index 9f0d368..46138d4 100644
--- a/config.m4
+++ b/config.m4
@@ -257,6 +257,7 @@
src/core/ext/resolver/dns/c_ares/dns_resolver.c \
src/core/ext/resolver/dns/c_ares/grpc_ares_ev_driver_posix.c \
src/core/ext/resolver/dns/c_ares/grpc_ares_wrapper.c \
+ src/core/ext/resolver/dns/native/dns_resolver.c \
src/core/ext/resolver/sockaddr/sockaddr_resolver.c \
src/core/ext/load_reporting/load_reporting.c \
src/core/ext/load_reporting/load_reporting_filter.c \
@@ -587,6 +588,7 @@
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/lb_policy/round_robin)
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/load_reporting)
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/dns/c_ares)
+ PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/dns/native)
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/resolver/sockaddr)
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/alpn)
PHP_ADD_BUILD_DIR($ext_builddir/src/core/ext/transport/chttp2/client/insecure)