[Mac, Win] Only show the user manager tutorial if "See what's new" is clicked.

chrome/browser/profiles/profile_window.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/profiles/profile_window.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 285 matching lines @@
       base::string16(),
       std::string());
 }
 
 void ShowUserManagerMaybeWithTutorial(Profile* profile) {
   // Guest users cannot appear in the User Manager, nor display a tutorial.
   if (!profile || profile->IsGuestSession()) {
     chrome::ShowUserManager(base::FilePath());
     return;
   }
-  // Show the tutorial if the profile has not shown it before.
-  PrefService* pref_service = profile->GetPrefs();
-  bool tutorial_shown = pref_service->GetBoolean(
-      prefs::kProfileUserManagerTutorialShown);
-  if (!tutorial_shown)
-    pref_service->SetBoolean(prefs::kProfileUserManagerTutorialShown, true);
-
-  if (tutorial_shown) {
-    chrome::ShowUserManager(profile->GetPath());
-  } else {
-    chrome::ShowUserManagerWithTutorial(
-        profiles::USER_MANAGER_TUTORIAL_OVERVIEW);
-  }
+  chrome::ShowUserManagerWithTutorial(profiles::USER_MANAGER_TUTORIAL_OVERVIEW);
 }
 
 void EnableNewProfileManagementPreview(Profile* profile) {
 #if defined(OS_ANDROID)
   NOTREACHED();
 #else
   // TODO(rogerta): instead of setting experiment flags and command line
   // args, we should set a profile preference.
   const about_flags::Experiment experiment = {
       kNewProfileManagementExperimentInternalName,
@@ skipping 45 matching lines @@
     case BrowserWindow::AVATAR_BUBBLE_MODE_REAUTH:
       return profiles::BUBBLE_VIEW_MODE_GAIA_REAUTH;
     case BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT:
       return profiles::BUBBLE_VIEW_MODE_PROFILE_CHOOSER;
   }
   NOTREACHED();
   return profiles::BUBBLE_VIEW_MODE_PROFILE_CHOOSER;
 }
 
 }  // namespace profiles