Add settings screen that lets a user setup a PIN to unlock their device with.

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

 // Copyright 2015 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/ui/webui/settings/md_settings_localized_strings_provider.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/number_formatting.h"
@@ skipping 764 matching lines @@
     {"quickUnlockUnlockMethodPinAndPassword",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_UNLOCK_METHOD_PIN_AND_PASSWORD},
     {"quickUnlockUnlockMethodNone",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_UNLOCK_METHOD_NONE},
     {"quickUnlockConfigurePinButton",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_BUTTON},
     {"quickUnlockConfigurePinChoosePinTitle",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_CHOOSE_PIN_TITLE},
     {"quickUnlockConfigurePinChoosePinWeakPinWarning",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_CHOOSE_PIN_WEAK_PIN_WARNING},
+    {"quickUnlockConfigurePinChoosePinTooShort",
+     IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_CHOOSE_PIN_TOO_SHORT},
     {"quickUnlockConfigurePinContinueButton",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_CONTINUE_BUTTON},
     {"quickUnlockConfigurePinConfirmPinTitle",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_CONFIRM_PIN_TITLE},
     {"quickUnlockConfigurePinMismatchedPins",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_MISMATCHED_PINS},
     {"quickUnlockConfigurePinBackButton",
      IDS_SETTINGS_PEOPLE_QUICK_UNLOCK_CONFIGURE_PIN_BACK_BUTTON},
     {"changePictureTitle", IDS_SETTINGS_CHANGE_PICTURE_DIALOG_TITLE},
     {"changePicturePageDescription", IDS_SETTINGS_CHANGE_PICTURE_DIALOG_TEXT},
@@ skipping 483 matching lines @@
 #endif
   AddUsersStrings(html_source);
   AddWebContentStrings(html_source);
 
   policy_indicator::AddLocalizedStrings(html_source);
 
   html_source->SetJsonPath(kLocalizedStringsFile);
 }
 
 }  // namespace settings