[EasyUnlock] Make login work if command line flag is enabled.

chrome/browser/signin/easy_unlock_service_signin_chromeos.cc

 // 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.
 
 #include "chrome/browser/signin/easy_unlock_service_signin_chromeos.h"
 
 #include <stdint.h>
 
 #include "base/base64url.h"
 #include "base/bind.h"
@@ skipping 496 matching lines @@
                     << "  psk: " << device.psk;
       continue;
     }
     cryptauth::RemoteDevice remote_device(
         account_id.GetUserEmail(), std::string(), decoded_public_key,
         device.bluetooth_address, decoded_psk, decoded_challenge);
 
     if (!device.serialized_beacon_seeds.empty()) {
       PA_LOG(INFO) << "Deserializing BeaconSeeds: "
                    << device.serialized_beacon_seeds;
-      // TODO(tengs): Assign deserialized BeaconSeeds to the RemoteDevice.
-      DeserializeBeaconSeeds(device.serialized_beacon_seeds);
+      remote_device.LoadBeaconSeeds(
+          DeserializeBeaconSeeds(device.serialized_beacon_seeds));
     } else {
       PA_LOG(WARNING) << "No BeaconSeeds were loaded.";
     }
 
     remote_devices.push_back(remote_device);
     PA_LOG(INFO) << "Loaded Remote Device:\n"
                  << "  user id: " << remote_device.user_id << "\n"
                  << "  name: " << remote_device.name << "\n"
                  << "  public key" << device.public_key << "\n"
                  << "  bt_addr:" << remote_device.bluetooth_address;
   }
 
   SetProximityAuthDevices(account_id, remote_devices);
 }
 
 const EasyUnlockServiceSignin::UserData*
     EasyUnlockServiceSignin::FindLoadedDataForCurrentUser() const {
   if (!account_id_.is_valid())
     return nullptr;
 
   const auto it = user_data_.find(account_id_);
   if (it == user_data_.end())
     return nullptr;
   if (it->second->state != USER_DATA_STATE_LOADED)
     return nullptr;
   return it->second.get();
 }