Revert of Fix flaky remoting webapp javascript unittest.

remoting/webapp/files.gni

 # 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.
 
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@@ skipping 59 matching lines @@
 
 # These product files are excluded from our JavaScript unittest
 remoting_webapp_unittests_exclude_js_files = [
   # background.js is where the onLoad handler is defined, which
   # makes it the entry point of the background page.
   "crd/js/background.js",
 ]
 
 # The unit test cases for the webapp
 remoting_webapp_unittests_js_files = [
+  # TODO(jrw): Move spy_promise to base.
+  "unittests/spy_promise.js",
+  "unittests/spy_promise_unittest.js",
   "base/js/base_unittest.js",
   "base/js/base_event_hook_unittest.js",
   "base/js/base_inherits_unittest.js",
   "base/js/callstack_unittest.js",
   "base/js/client_session_unittest.js",
   "base/js/client_session_factory_unittest.js",
   "base/js/console_wrapper_unittest.js",
   "base/js/dns_blackhole_checker_unittest.js",
   "base/js/error_unittest.js",
   "base/js/fallback_signal_strategy_unittest.js",
@@ skipping 615 matching lines @@
       ar_main_template,
       ar_feedback_consent_template,
       ar_loading_window_template,
       remoting_webapp_template_message_window,
       remoting_webapp_template_wcs_sandbox,
     ] + ar_main_template_files + ar_all_js_files
 
 webapp_js_files = remoting_webapp_unittest_html_all_js_files +
                   remoting_webapp_wcs_sandbox_html_js_files +
                   remoting_webapp_background_html_js_files