Skip ARC initial screen when everything is set up by policy

chrome/browser/chromeos/arc/optin/arc_optin_preference_handler.h

 // Copyright 2016 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_BROWSER_CHROMEOS_ARC_OPTIN_ARC_OPTIN_PREFERENCE_HANDLER_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_OPTIN_ARC_OPTIN_PREFERENCE_HANDLER_H_
 
 #include "base/macros.h"
 
 #include "components/prefs/pref_change_registrar.h"
 
 class PrefService;
 
 namespace arc {
 
 class ArcOptInPreferenceHandlerObserver;
 
 // This helper encapsulates access to preferences and metrics mode, used in
 // OptIn flow. It provides setters for metrics mode and preferences. It also
 // observes changes there. Changes in preferences and metrics mode are passed to
 // external consumer via ArcOptInPreferenceHandlerObserver. Once started it
 // immediately sends current state of metrics mode and preferences.
+//
+// Note that the preferences and metrics mode passed by this class should only
+// be used for the OptIn flow, as this class overrides some of the defaults in
+// order to encourage users to consent with the settings.
 class ArcOptInPreferenceHandler {
  public:
   ArcOptInPreferenceHandler(ArcOptInPreferenceHandlerObserver* observer,
                             PrefService* pref_serive);
   ~ArcOptInPreferenceHandler();
 
   void Start();
 
   void EnableMetrics(bool is_enabled);
   void EnableBackupRestore(bool is_enabled);
@@ skipping 17 matching lines @@
   PrefChangeRegistrar pref_local_change_registrar_;
   // Used to track backup&restore and location service preference.
   PrefChangeRegistrar pref_change_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcOptInPreferenceHandler);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_OPTIN_ARC_OPTIN_PREFERENCE_HANDLER_H_