Add a SigninAllowed policy.

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/basictypes.h"
 
 namespace prefs {
 
@@ skipping 19 matching lines @@
 // Did the user change the home page after install?
 const char kHomePageChanged[] = "homepage_changed";
 
 // Does this user have a Google+ Profile?
 const char kIsGooglePlusUser[] = "is_google_plus_user";
 
 // List of pages that are manually approved.
 const char kManagedModeWhitelist[] = "profile.managed.whitelist";
 // List of pages that are manually blocked.
 const char kManagedModeBlacklist[] = "profile.managed.blacklist";
+// Boolean which stores if the managed user is not allowed to signin to chrome.
+const char kManagedUserNoSignin[] = "profile.managed.no_signin";
 
 // Used to determine if the last session exited cleanly. Set to false when
 // first opened, and to true when closing. On startup if the value is false,
 // it means the profile didn't exit cleanly.
 // DEPRECATED: this is replaced by kSessionExitType and exists for backwards
 // compatability.
 const char kSessionExitedCleanly[] = "profile.exited_cleanly";
 
 // A string pref whose values is one of the values defined by
 // |ProfileImpl::kPrefExitTypeXXX|. Set to |kPrefExitTypeCrashed| on startup and
@@ skipping 2184 matching lines @@
 const char kLastPolicyStatisticsUpdate[] = "policy.last_statistics_update";
 
 #if defined(OS_CHROMEOS)
 // The RLZ brand code, if enabled.
 const char kRLZBrand[] = "rlz.brand";
 // Whether RLZ pings are disabled.
 const char kRLZDisabled[] = "rlz.disabled";
 #endif
 
 }  // namespace prefs