Add quick unlock Settings in options page

chrome/browser/resources/settings/people_page/lock_screen.html

 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="/people_page/lock_state_behavior.html">
 <link rel="import" href="/people_page/password_prompt_dialog.html">
 <link rel="import" href="/people_page/setup_pin_dialog.html">
 <link rel="import" href="/prefs/prefs_behavior.html">
 <link rel="import" href="/route.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="settings-lock-screen">
   <template>
     <style include="settings-shared"></style>
     <style>
       .radio-indent {
         margin-left: 28px;
       }
 
+      .radio-indent[hidden] {

[jdufault, 2016/08/15 19:21:18]

Are these needed?

Add TODO to revert if so.

[xiaoyinh(OOO Sep 11-29), 2016/08/16 17:33:43]

Yes. It is very weird that in the options the hidden attribute is not working
unless I set it to "display: none" specifically. 
I have added TODO.
Thanks!

+        display: none;
+      }
+      .single-column[hidden] {
+        display: none;
+      }
+
       paper-button {
         text-transform: none;
       }
     </style>
 
     <div>
+      <!--TODO(xiaoyinh@): Revert changes to i18n text
+                           once we don't need to support options -->
       <div class="list-frame">
         <paper-radio-group selected="{{selectedUnlockType}}">
           <paper-radio-button name="password">
-            $i18n{lockScreenPasswordOnly}
+            [[i18n('lockScreenPasswordOnly')]]
           </paper-radio-button>
           <paper-radio-button name="pin+password">
-            $i18n{lockScreenPinOrPassword}
+            [[i18n('lockScreenPinOrPassword')]]
           </paper-radio-button>
           <div class="settings-box continuation radio-indent"
                hidden$="[[!showConfigurePinButton_(selectedUnlockType)]]">
             <paper-button is="action-link" on-tap="onConfigurePin_">
               [[getSetupPinText_(hasPin)]]
             </paper-button>
           </div>
         </paper-radio-group>
       </div>
 
-      <div class="settings-box single-column">
+      <div class="settings-box single-column"
+           hidden$="[[hideEnableScreenlock]]">
         <settings-checkbox pref="{{prefs.settings.enable_screen_lock}}"
                            label="$i18n{enableScreenlock}">
         </settings-checkbox>
       </div>
 
       <settings-password-prompt-dialog id="passwordPrompt"
                                        on-close="onPasswordClosed_"
                                        set-modes="{{setModes_}}">
       </settings-password-prompt-dialog>
       <settings-setup-pin-dialog id="setupPin" on-done="onPinSetupDone_"
                                  set-modes="[[setModes_]]">
       </settings-setup-pin-dialog>
     </div>
   </template>
 
   <script src="lock_screen.js"></script>
 </dom-module>