Add chrome://proximity-auth UI implemented with Polymer.

components/proximity_auth/webui/resources/local-state.js

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+Polymer('local-state', {
+  publish: {
+    /**
+     * The current CryptAuth enrollment status.
+     * @type {{
+     *   lastSuccessTime: ?number,
+     *   nextRefreshTime: string,
+     *   lastAttemptFailed: boolean,
+     * }}
+     */
+    enrollmentInfo: {
+      lastSuccessTime: null,
+      nextRefreshTime: '90 days',
+      lastAttemptFailed: true
+    },
+
+    /**
+     * The current CryptAuth device sync status.
+     * @type {{
+     *   lastSuccessTime: ?number,
+     *   nextRefreshTime: string,
+     *   lastAttemptFailed: boolean,
+     * }}
+     */
+    deviceSyncInfo: {
+      lastSuccessTime: "April 20 14:23",
+      nextRefreshTime: '15.5 hours',
+      lastAttemptFailed: false
+    },
+
+    /**
+     * List of unlock keys that can unlock the local device.
+     * @type {Array<DeviceInfo>}
+     */
+    unlockKeys: [
+      {
+       publicKey: "CAESRQogOlH8DgPMQu7eAt-b6yoTXcazG8mAl6SPC5Ds-LTULIcSIQDZDM" +
+                  "qsoYRO4tNMej1FBEl1sTiTiVDqrcGq-CkYCzDThw==",
+       friendlyDeviceName: "LGE Nexus 4",
+       bluetoothAddress: "C4:43:8F:12:07:07",
+       unlockKey: true,
+       unlockable: false,
+       connectionStatus: 'connected',
+       remoteState: {
+         userPresent: true,
+         secureScreenLock: true,
+         trustAgent: true
+       },
+      },
+    ],
+  },
+});