Separate invalidator and sync client ID (part 2/2)

sync/notifier/invalidator.h

Index: sync/notifier/invalidator.h
diff --git a/sync/notifier/invalidator.h b/sync/notifier/invalidator.h
index 7854b2817d9f5377df56186a4592cbe48bc69263..a0f881e8391a1a62c87072d2b4aafb9367165358 100644
--- a/sync/notifier/invalidator.h
+++ b/sync/notifier/invalidator.h
@@ -78,11 +78,6 @@ class SYNC_EXPORT Invalidator {
   // the updated state.
   virtual InvalidatorState GetInvalidatorState() const = 0;
 
-  // SetUniqueId must be called once, before any call to
-  // UpdateCredentials.  |unique_id| should be a non-empty globally
-  // unique string.
-  virtual void SetUniqueId(const std::string& unique_id) = 0;
-
   // The observers won't be notified of any notifications until
   // UpdateCredentials is called at least once. It can be called more than
   // once.