md-settings: Added settings for fingerprint unlock.

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="chrome://resources/polymer/v1_0/paper-radio-group/paper-radio-group.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>
     <style include="settings-shared"></style>
     <style>
       .radio-indent {
         margin-left: 28px;
       }
 
       paper-button {
         text-transform: none;
       }
     </style>
 
     <div>
-      <div class="list-frame">
-        <paper-radio-group selected="{{selectedUnlockType}}">
-          <paper-radio-button name="password">
-            $i18n{lockScreenPasswordOnly}
-          </paper-radio-button>
-          <paper-radio-button name="pin+password">
-            $i18n{lockScreenPinOrPassword}
-          </paper-radio-button>
-          <div class="settings-box continuation radio-indent"
-               hidden$="[[!showConfigurePinButton_(selectedUnlockType)]]">
-            <paper-button is="action-link" on-tap="onConfigurePin_">
-              [[getSetupPinText_(hasPin)]]
-            </paper-button>
-          </div>
-        </paper-radio-group>
-      </div>
+      <template is="dom-if" if="[[pinUnlockEnabled_]]">
+        <div class="list-frame">
+          <paper-radio-group selected="{{selectedUnlockType}}">
+            <paper-radio-button name="password">
+              $i18n{lockScreenPasswordOnly}
+            </paper-radio-button>
+            <paper-radio-button name="pin+password">
+              $i18n{lockScreenPinOrPassword}
+            </paper-radio-button>
+            <div class="settings-box continuation radio-indent"
+                 hidden$="[[!showConfigurePinButton_(selectedUnlockType)]]">
+              <paper-button is="action-link" on-tap="onConfigurePin_">
+                [[getSetupPinText_(hasPin)]]
+              </paper-button>
+            </div>
+          </paper-radio-group>
+        </div>
+      </template>
 
-      <div class="settings-box single-column">
+      <template is="dom-if" if="[[fingerprintUnlockEnabled_]]">
+        <div class="settings-box single-column">
+          <settings-checkbox
+              pref="{{prefs.settings.enable_quick_unlock_fingerprint}}"
+              label="$i18n{lockScreenFingerprintEnable}">
+          </settings-checkbox>
+          <iron-collapse
+              opened="[[prefs.settings.enable_quick_unlock_fingerprint.value]]">
+            <settings-fingerprint-list></settings-fingerprint-list>
+          </iron-collapse>
+        </div>
+      </template>
+
+      <div class="settings-box single-column screen-lock">

[Dan Beam, 2017/01/10 23:23:46]

what does the .screen-lock class does?

[sammiequon, 2017/01/11 00:29:09]

This is for c/b/r/o/c/quick_unlock_configure_overlay.js to continue hiding this
checkbox and not hide the newly added fingerprint checkbox.

         <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>