md settings: Update lock screen to match new mocks.

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- Main Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_SECONDARY_USER_BANNER" desc="Banner displayed in settings page when the user is secondary in a multi-profile session.">
       Some settings belonging to <ph name="PRIMARY_EMAIL">$1<ex>john@google.com</ex></ph> are being shared with you. These settings only affect your account when using multiple sign-in.
     </message>
   </if>
 
@@ skipping 2271 matching lines @@
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_HIGH_SECURITY" desc="Text on the lock screen which indicates an unlock method is high security.">
       High security
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_MEDIUM_SECURITY" desc="Text on the lock screen which indicates an unlock method is medium security.">
       Medium security
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_TITLE" desc="Text on the people page which opens up the quick unlock subpage and the title of the quick unlock subpage.">
       Screen lock
     </message>
+    <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_OPTIONS" desc="Text on the lock screen which is the subheader for the screen locking options.">
+      Screen lock options
+    </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_PASSWORD_ONLY" desc="Only the account password can be used to unlock the device.">
       Password only
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_PIN_OR_PASSWORD" desc="The account password or a custom PIN can be used to unlock the device.">
       PIN or password
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_NONE" desc="Text on the people page which opens up the quick unlock subpage and the title of the quick unlock subpage.">
       None
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_CHANGE_PIN_BUTTON" desc="Button that the user can click to change an existing already-active PIN.">
       Change PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_SETUP_PIN_BUTTON" desc="Button that is used to setup a new PIN when the user does not have a PIN yet.">
       Set up PIN
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_EDIT_FINGERPRINTS" desc="Text on the lock screen which opens up the fingerprint subpage.">
       Edit Fingerprints
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_EDIT_FINGERPRINTS_DESCRIPTION" desc="Secondary text on the lock screen which opens up the fingerprint subpage.">
       Set up a faster way to unlock your device
     </message>
+    <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_FINGERPRINT_SETUP_BUTTON" desc="Text on the lock screen button which opens up the fingerprint subpage.">
+      Set Up
+    </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_NUM_FINGERPRINTS" desc="Text on the lock screen which tells users how many fingerprints they have enrolled.">
       <ph name="NUM_FINGERPRINTS">$1<ex>1</ex></ph> fingerprints set up
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_FINGERPRINT_SUBPAGE_TITLE" desc="Title of the fingerprint subpage.">
       Fingerprint
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_REGISTERED_FINGERPRINTS_LABEL" desc="Text above fingerprint list that tells users their registered fingerprints.">
       Saved fingerprints
     </message>
     <message name="IDS_SETTINGS_PEOPLE_LOCK_SCREEN_ADD_FINGERPRINT_BUTTON" desc="Button that is used to add a new fingerprint.">
@@ skipping 678 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_LABEL" desc="Label for the control that opens a user's network proxy settings.">
       Open proxy settings
     </message>
   </if>
 </grit-part>