Separate sync and invalidation client IDs

sync/notifier/invalidator.h

Index: sync/notifier/invalidator.h
diff --git a/sync/notifier/invalidator.h b/sync/notifier/invalidator.h
index 0c2b31111d6981bcb77e43a4e8f91f6954a2d4b6..98ce8104cb7407aac5db9d1fbaa5916903a72b68 100644
--- a/sync/notifier/invalidator.h
+++ b/sync/notifier/invalidator.h
@@ -74,11 +74,6 @@ 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.