Browser-based guest policy implementation

chrome/browser/browser_process_impl.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/browser/browser_process_impl.h"
 
 #include <algorithm>
 #include <map>
 #include <vector>
 
@@ skipping 756 matching lines @@
 void BrowserProcessImpl::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterBooleanPref(prefs::kDefaultBrowserSettingEnabled,
                                 false);
   // This policy needs to be defined before the net subsystem is initialized,
   // so we do it here.
   registry->RegisterIntegerPref(prefs::kMaxConnectionsPerProxy,
                                 net::kDefaultMaxSocketsPerProxyServer);
 
   registry->RegisterBooleanPref(prefs::kAllowCrossOriginAuthPrompt, false);
 
+  registry->RegisterBooleanPref(prefs::kBrowserGuestModeEnabled, true);
+
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
   registry->RegisterBooleanPref(prefs::kEulaAccepted, false);
 #endif  // defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_IOS)
 #if defined(OS_WIN)
   if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
     registry->RegisterStringPref(prefs::kRelaunchMode,
                                  upgrade_util::kRelaunchModeDefault);
   }
 #endif
 
@@ skipping 416 matching lines @@
 }
 
 void BrowserProcessImpl::OnAutoupdateTimer() {
   if (CanAutorestartForUpdate()) {
     DLOG(WARNING) << "Detected update.  Restarting browser.";
     RestartBackgroundInstance();
   }
 }
 
 #endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)