Add quick unlock Settings in options page

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

 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.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="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
 <link rel="import" href="/settings_shared_css.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="settings-password-prompt-dialog">
   <template>
     <style include="settings-shared">
       #passwordInput {
         display: inline-block;
       }
 
       .settings-box {
         padding: 0;
       }
     </style>
 
+    <!--TODO(xiaoyinh@): Use this format $i18n{passwordPromptPasswordLabel} once 

[jdufault, 2016/08/16 17:43:14]

Is there trailing whitespace at the end of this line?

[xiaoyinh(OOO Sep 11-29), 2016/08/17 20:52:11]

Removed. Thanks!

+                         we don't need to support options. -->
     <dialog is="cr-dialog" id="dialog">
-      <div class="title">$i18n{passwordPromptTitle}</div>
+      <div class="title">[[i18n('passwordPromptTitle')]]</div>
       <div class="body">
 
-        <div class="settings-box first">$i18n{passwordPromptEnterPassword}</div>
+        <div class="settings-box first">[[i18n('passwordPromptEnterPassword')]]</div>
 
         <paper-input id="passwordInput" type="password" autofocus
-                     label="$i18n{passwordPromptPasswordLabel}"
+                     label="[[i18n('passwordPromptPasswordLabel')]]"
                      no-label-float
                      value="{{password_}}"
                      on-change="checkPassword_"
                      invalid$="[[passwordInvalid_]]"
-                     error-message="$i18n{passwordPromptInvalidPassword}"
+                     error-message="[[i18n('passwordPromptInvalidPassword')]]"
                      aria-disabled="false">
         </paper-input>
 
         <div class="button-strip">
           <paper-button class="cancel-button" on-tap="cancel">
-            $i18n{cancel}
+            [[i18n('cancel')]]
           </paper-button>
 
           <paper-button class="action-button" on-tap="checkPassword_"
                         disabled$="[[!enableConfirm_(password_,
                                                      passwordInvalid_)]]">
-            $i18n{confirm}
+            [[i18n('confirm')]]
           </paper-button>
         </div>
       </div>
     </dialog>
   </template>
   <script src="password_prompt_dialog.js"></script>
 </dom-module>