Update to use the canonical version of LB proto
diff --git a/BUILD b/BUILD
index 0cbf9a9..07605b3 100644
--- a/BUILD
+++ b/BUILD
@@ -1198,6 +1198,8 @@
         "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/load_balancer.pb.c",
+        "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",
     ],
     hdrs = [
         "src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h",
@@ -1206,6 +1208,8 @@
         "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h",
         "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h",
         "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
+        "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/duration.pb.h",
+        "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/timestamp.pb.h",
     ],
     external_deps = [
         "nanopb",
@@ -1227,6 +1231,8 @@
         "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/load_balancer.pb.c",
+        "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",
     ],
     hdrs = [
         "src/core/ext/filters/client_channel/lb_policy/grpclb/client_load_reporting_filter.h",
@@ -1235,6 +1241,8 @@
         "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_client_stats.h",
         "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h",
         "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/load_balancer.pb.h",
+        "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/duration.pb.h",
+        "src/core/ext/filters/client_channel/lb_policy/grpclb/proto/grpc/lb/v1/google/protobuf/timestamp.pb.h",
     ],
     external_deps = [
         "nanopb",