Copy Smart Lock user preferences to local state so we can access them on the sign-in screen.

chrome/common/extensions/api/easy_unlock_private.idl

 // Copyright 2014 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.
 
 // <code>chrome.easyUnlockPrivate</code> API that provides hooks to Chrome to
 // be used by Easy Unlock component app.
 namespace easyUnlockPrivate {
   // Signature algorithms supported by the crypto library methods used by
   // Easy Unlock.
   enum SignatureType {
@@ skipping 125 matching lines @@
 
   // The information about a user associated with Easy unlock service.
   dictionary UserInfo {
     // The user id.
     DOMString userId;
 
     // Whether the user is logged in. If not logged in, the app is running on
     // the signin screen.
     boolean loggedIn;
 
+    // Whether to check if the remote device is in very close proximity before

[Yoyo Zhou, 2015/01/27 20:41:55]

I would prefer "whether to require the remote device to be in very close
proximity"

[Tim Song, 2015/01/27 20:52:33]

Done.

+    // allowing unlock (~1 feet).
+    boolean checkCloseProximity;
+
     // Whether all data needed to use Easy unlock service has been loaded for
     // the user.
     boolean dataReady;
   };
 
   // Callback for crypto methods that return a single array buffer.
   callback DataCallback = void(optional ArrayBuffer data);
 
   // An empty callback used purely for signalling success vs. failure.
   callback EmptyCallback = void();
@@ skipping 170 matching lines @@
                                   ConnectionInfoCallback callback);
   };
 
   interface Events {
     // Event fired when the data for the user currently associated with
     // Easy unlock service is updated.
     // |userInfo| The updated user information.
     static void onUserInfoUpdated(UserInfo userInfo);
   };
 };