Update killSwitch proto definitions

The protocol buffers definitions have been obtained from the TWPT server
repo.

Bug: twpowertools:162
Change-Id: Ia5cc44be28e2bc6c1054484c04c197b9b6852318
diff --git a/src/killSwitch/api_proto/kill_switch_objects.proto b/src/killSwitch/api_proto/kill_switch_objects.proto
index 041291f..128371b 100644
--- a/src/killSwitch/api_proto/kill_switch_objects.proto
+++ b/src/killSwitch/api_proto/kill_switch_objects.proto
@@ -12,6 +12,7 @@
     TYPE_UNKNOWN = 0;
     TYPE_EXPERIMENT = 1;
     TYPE_OPTION = 2;
+    TYPE_INTERNAL_KILL_SWITCH = 3;
     TYPE_DEPRECATED = 10;
   }
   Type type = 3;