cros: Added a new function to quick unlock api for checking unfinished pins.

chrome/browser/profiles/profile.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/profiles/profile.h"
 
 #include <string>
 
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 155 matching lines @@
       false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       prefs::kMediaRouterFirstRunFlowAcknowledged,
       false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 #endif
 
 #if defined(OS_CHROMEOS)
   registry->RegisterBooleanPref(prefs::kAllowScreenLock, true);
+
+  // Preferences related the lock screen pin unlock.
+  registry->RegisterIntegerPref(prefs::kPinUnlockMinimumLength, 4);
+  // 0 indicates no maximum length for the pin.
+  registry->RegisterIntegerPref(prefs::kPinUnlockMaximumLength, 0);
+  registry->RegisterBooleanPref(prefs::kPinUnlockAllowWeakPins, true);
 #endif
 }
 
 std::string Profile::GetDebugName() {
   std::string name = GetPath().BaseName().MaybeAsASCII();
   if (name.empty()) {
     name = "UnknownProfile";
   }
   return name;
 }
@@ skipping 51 matching lines @@
   if (a->IsSameProfile(b))
     return false;
   return a->GetOriginalProfile() < b->GetOriginalProfile();
 }
 
 double Profile::GetDefaultZoomLevelForProfile() {
   return GetDefaultStoragePartition(this)
       ->GetHostZoomMap()
       ->GetDefaultZoomLevel();
 }