Factor out channel state watching
diff --git a/src/core/client_config/lb_policy.h b/src/core/client_config/lb_policy.h
index 42929e9..42be915 100644
--- a/src/core/client_config/lb_policy.h
+++ b/src/core/client_config/lb_policy.h
@@ -58,6 +58,16 @@
void (*pick)(grpc_lb_policy *policy, grpc_pollset *pollset,
grpc_metadata_batch *initial_metadata, grpc_subchannel **target,
grpc_iomgr_closure *on_complete);
+
+ /** broadcast a transport op to all subchannels */
+ void (*broadcast)(grpc_lb_policy *policy, grpc_transport_op *op);
+
+ /** check the current connectivity of the lb_policy */
+ grpc_connectivity_state (*check_connectivity)(grpc_lb_policy *policy);
+
+ /** call notify when the connectivity state of a channel changes from *state.
+ Updates *state with the new state of the policy */
+ void (*notify_on_state_change)(grpc_lb_policy *policy, grpc_connectivity_state *state, grpc_iomgr_closure *closure);
};
void grpc_lb_policy_ref(grpc_lb_policy *policy);