md-settings: Added settings for fingerprint unlock.

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/action_link.html">
 <link rel="import" href="chrome://resources/html/action_link_css.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.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="/people_page/fingerprint_list.html">
 <link rel="import" href="/people_page/lock_screen_constants.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>
@@ skipping 14 matching lines @@
           </paper-radio-button>
         </paper-radio-group>
         <div class="list-item radio-indent"
             hidden$="[[!showConfigurePinButton_(selectedUnlockType)]]">
           <a is="action-link" class="list-button" on-tap="onConfigurePin_">
             [[getSetupPinText_(hasPin)]]
           </a>
         </div>
       </div>
 
+      <template is="dom-if" if="[[fingerprintUnlockEnabled_]]">
+        <div class="settings-box">
+          <settings-toggle-button class="start"
+              pref="{{prefs.settings.enable_quick_unlock_fingerprint}}"
+              label="$i18n{lockScreenFingerprintEnable}">
+          </settings-toggle-button>
+        </div>
+        <iron-collapse
+            opened="[[prefs.settings.enable_quick_unlock_fingerprint.value]]">
+          <div class="settings-box continuation">
+            <settings-fingerprint-list></settings-fingerprint-list>
+          </div>
+        </iron-collapse>
+      </template>
+
       <div class="settings-box">
         <settings-toggle-button class="start"
             pref="{{prefs.settings.enable_screen_lock}}"
             label="$i18n{enableScreenlock}">
         </settings-toggle-button>
       </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>