Do not submit: high level overview patch.

chrome/common/chrome_notification_types.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 803 matching lines @@
 
   // Foreign sessions has been disabled. New tabs should not display foreign
   // session data.
   NOTIFICATION_FOREIGN_SESSION_DISABLED,
 
   // All tab metadata has been loaded from disk asynchronously.
   // Sent on the UI thread.
   // The source is the Profile. There are no details.
   NOTIFICATION_SESSION_RESTORE_COMPLETE,
 
+  NOTIFICATION_SESSION_SYNC_ID_GENERATED,
+
   // Cookies -----------------------------------------------------------------
 
   // Sent when a cookie changes. The source is a Profile object, the details
   // are a ChromeCookieDetails object.
   NOTIFICATION_COOKIE_CHANGED,
 
   // Token Service -----------------------------------------------------------
 
   // When the token service has a new token available for a service, one of
   // these notifications is issued per new token.
@@ skipping 411 matching lines @@
   // Note:-
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_