Add new BrowserForceSigninEnabeld policy option with future:true flag.

chrome/common/pref_names.cc

 // 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.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
@@ skipping 2163 matching lines @@
 // while rolling out the change to PAC.
 const char kPacHttpsUrlStrippingEnabled[] =
     "proxy.pac_https_url_stripping_enabled";
 
 // Whether Guest Mode is enabled within the browser.
 const char kBrowserGuestModeEnabled[] = "profile.browser_guest_enabled";
 
 // Whether Adding a new Person is enabled within the user manager.
 const char kBrowserAddPersonEnabled[] = "profile.add_person_enabled";
 
+// Whether profile can be used before sign in.
+const char kBrowserForceSigninEnabled[] = "profile.force_signin_enabled";
+
 // Device identifier used by Easy Unlock stored in local state. This id will be
 // combined with a user id, before being registered with the CryptAuth server,
 // so it can't correlate users on the same device.
 const char kEasyUnlockDeviceId[] = "easy_unlock.device_id";
 
 // A dictionary that maps user id to hardlock state.
 const char kEasyUnlockHardlockState[] = "easy_unlock.hardlock_state";
 
 // A dictionary that maps user id to public part of RSA key pair used by
 // Easy Sign-in for the user.
@@ skipping 55 matching lines @@
 const char kOriginTrialPublicKey[] = "origin_trials.public_key";
 
 // A list of origin trial features to disable by policy.
 const char kOriginTrialDisabledFeatures[] = "origin_trials.disabled_features";
 
 // Policy that indicates the state of updates for the binary components.
 const char kComponentUpdatesEnabled[] =
     "component_updates.component_updates_enabled";
 
 }  // namespace prefs