Settings People Revamp: Fix some small bugs in the handler

chrome/browser/ui/webui/settings/people_handler.h

Index: chrome/browser/ui/webui/settings/people_handler.h
diff --git a/chrome/browser/ui/webui/settings/people_handler.h b/chrome/browser/ui/webui/settings/people_handler.h
index 1ca63972498cc54f934d8d97b8c4eb7f09a89cf7..e09b145d64724753d60b85700ff4c65f8b692c01 100644
--- a/chrome/browser/ui/webui/settings/people_handler.h
+++ b/chrome/browser/ui/webui/settings/people_handler.h
@@ -112,11 +112,6 @@ class PeopleHandler : public SettingsPageUIHandler,
   // sync_driver::SyncServiceObserver implementation.
   void OnStateChanged() override;
 
-  // Shows advanced configuration dialog without going through sign in dialog.
-  // Kicks the sync backend if necessary with showing spinner dialog until it
-  // gets ready.
-  void OpenConfigureSync();
-
   // Returns a newly created dictionary with a number of properties that
   // correspond to the status of sync.
   std::unique_ptr<base::DictionaryValue> GetSyncStatusDictionary();
@@ -200,7 +195,8 @@ class PeopleHandler : public SettingsPageUIHandler,
   // Used to listen for pref changes to allow or disallow signin.
   PrefChangeRegistrar profile_pref_registrar_;
 
-  // Manages observer lifetime.
+  // Manages observer lifetimes.
+  ScopedObserver<SigninManagerBase, PeopleHandler> signin_observer_;
   ScopedObserver<ProfileSyncService, PeopleHandler> sync_service_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(PeopleHandler);