[Mac, Win] Show a user manager tutorial once per profile.

chrome/common/pref_names.h

 // Copyright (c) 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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
@@ skipping 631 matching lines @@
 extern const char kInvalidatorClientId[];
 extern const char kInvalidatorInvalidationState[];
 extern const char kInvalidatorSavedInvalidations[];
 
 extern const char kSignInPromoStartupCount[];
 extern const char kSignInPromoUserSkipped[];
 extern const char kSignInPromoShowOnFirstRunAllowed[];
 extern const char kSignInPromoShowNTPBubble[];
 
 extern const char kProfileAvatarTutorialShown[];
+extern const char kProfileUserManagerTutorialShown[];
 
 extern const char kProfileGAIAInfoUpdateTime[];
 extern const char kProfileGAIAInfoPictureURL[];
 
 extern const char kWebAppCreateOnDesktop[];
 extern const char kWebAppCreateInAppsMenu[];
 extern const char kWebAppCreateInQuickLaunchBar[];
 
 extern const char kGeolocationAccessToken[];
 #if defined(OS_ANDROID)
@@ skipping 279 matching lines @@
 
 #if defined(OS_ANDROID)
 extern const char kPartnerBookmarkMappings[];
 #endif
 
 extern const char kQuickCheckEnabled[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_