[merge to m59]md settings: Remove level of security indicator on lock screen.

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

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-radio-group/paper-radio-group.html">
 <link rel="import" href="../controls/settings_toggle_button.html">
 <link rel="import" href="easy_unlock_browser_proxy.html">
 <link rel="import" href="easy_unlock_turn_off_dialog.html">
 <link rel="import" href="fingerprint_browser_proxy.html">
 <link rel="import" href="lock_screen_constants.html">
@@ skipping 28 matching lines @@
       }
     </style>
 
     <div>
       <template is="dom-if" if="[[quickUnlockEnabled_]]">
         <div class="list-frame">
           <paper-radio-group id="unlockType" selected="{{selectedUnlockType}}">
             <paper-radio-button name="password">
               <div class="start">
                 $i18n{lockScreenPasswordOnly}
-                <div class="secondary">
-                  $i18n{lockScreenHighSecurity}
-                </div>
               </div>
             </paper-radio-button>
             <paper-radio-button name="pin+password">
               <div class="start">
                 $i18n{lockScreenPinOrPassword}
-                <div class="secondary">
-                  $i18n{lockScreenMediumSecurity}
-                </div>
               </div>
               <template is="dom-if"
                   if="[[showConfigurePinButton_(selectedUnlockType)]]">
                 <paper-button id="setupPinButton" class="secondary-button"
                     on-tap="onConfigurePin_">
                   [[getSetupPinText_(hasPin)]]
                 </paper-button>
               </template>
             </paper-radio-button>
           </paper-radio-group>
@@ skipping 81 matching lines @@
       <template is="dom-if" if="[[showEasyUnlockTurnOffDialog_]]">
         <easy-unlock-turn-off-dialog id="easyUnlockTurnOffDialog"
             on-close="onEasyUnlockTurnOffDialogClose_">
         </easy-unlock-turn-off-dialog>
       </template>
     </div>
   </template>
 
   <script src="lock_screen.js"></script>
 </dom-module>