cros: Added policies for screen unlock.

chrome/browser/profiles/profile.cc

Index: chrome/browser/profiles/profile.cc
diff --git a/chrome/browser/profiles/profile.cc b/chrome/browser/profiles/profile.cc
index ce0ced0aaa74e079470e3a385011612f69a83128..49a7ea80698de5fc4c6fc4f3ca9a20385a920f5b 100644
--- a/chrome/browser/profiles/profile.cc
+++ b/chrome/browser/profiles/profile.cc
@@ -27,6 +27,7 @@
 
 #if defined(OS_CHROMEOS)
 #include "base/command_line.h"
+#include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h"
 #include "chrome/common/chrome_switches.h"
 #include "chromeos/chromeos_switches.h"
 #endif
@@ -171,6 +172,14 @@ void Profile::RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
 
 #if defined(OS_CHROMEOS)
   registry->RegisterBooleanPref(prefs::kAllowScreenLock, true);
+
+  base::ListValue screen_unlock_whitelist_default;
+  screen_unlock_whitelist_default.AppendString("password");
+  registry->RegisterListPref(prefs::kQuickUnlockModeWhitelist,
+                             screen_unlock_whitelist_default.DeepCopy());
+  registry->RegisterIntegerPref(
+      prefs::kQuickUnlockTimeout,
+      static_cast<int>(chromeos::PasswordConfirmationFrequency::DAY));
 #endif
 }