[EasyUnlock] Move DataWithTimestamp out of ForegroundEidGenerator so it can be shared.

components/cryptauth/BUILD.gn

 # 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.
 
 # CryptAuth is a component which manages data about devices associated with a
 # user's account. This component both sends data about the current device and
 # requets data about associated devices.
 
 static_library("cryptauth") {
   sources = [
@@ skipping 22 matching lines @@
     "cryptauth_enrollment_manager.cc",
     "cryptauth_enrollment_manager.h",
     "cryptauth_enrollment_utils.cc",
     "cryptauth_enrollment_utils.h",
     "cryptauth_gcm_manager.cc",
     "cryptauth_gcm_manager.h",
     "cryptauth_gcm_manager_impl.cc",
     "cryptauth_gcm_manager_impl.h",
     "cryptauth_service.cc",
     "cryptauth_service.h",
+    "data_with_timestamp.cc",
+    "data_with_timestamp.h",
     "device_to_device_authenticator.cc",
     "device_to_device_authenticator.h",
     "device_to_device_initiator_operations.cc",
     "device_to_device_initiator_operations.h",
     "device_to_device_secure_context.cc",
     "device_to_device_secure_context.h",
     "foreground_eid_generator.cc",
     "foreground_eid_generator.h",
     "pref_names.cc",
     "pref_names.h",
@@ skipping 118 matching lines @@
     ":test_support",
     "//base/test:test_support",
     "//components/cryptauth/ble:unit_tests",
     "//components/gcm_driver:test_support",
     "//components/prefs:test_support",
     "//google_apis:test_support",
     "//net:test_support",
     "//testing/gtest",
   ]
 }