Update to use the canonical version of LB proto
diff --git a/grpc.gyp b/grpc.gyp
index 9974603..a840666 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -533,6 +533,8 @@
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.cc',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/duration.pb.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/timestamp.pb.c',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.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',
@@ -1266,6 +1268,8 @@
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.cc',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.cc',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/duration.pb.c',
+        'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/timestamp.pb.c',
         'src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.c',
         'third_party/nanopb/pb_common.c',
         'third_party/nanopb/pb_decode.c',