Added more typechecking functions and unit tests for existing code.

remoting/remoting_webapp_files.gypi

 # 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.
 
 {
   'variables': {
 
     # Jscompile proto files.
     # These provide type information for jscompile.
     'remoting_webapp_js_proto_files': [
@@ skipping 59 matching lines @@
       'webapp/base/js/ipc_unittest.js',
       'webapp/crd/js/apps_v2_migration_unittest.js',
       'webapp/crd/js/desktop_viewport_unittest.js',
       'webapp/crd/js/dns_blackhole_checker_unittest.js',
       'webapp/crd/js/error_unittest.js',
       'webapp/crd/js/fallback_signal_strategy_unittest.js',
       'webapp/crd/js/host_table_entry_unittest.js',
       'webapp/crd/js/identity_unittest.js',
       'webapp/crd/js/l10n_unittest.js',
       'webapp/crd/js/menu_button_unittest.js',
+      'webapp/crd/js/typecheck_unittest.js',
       'webapp/crd/js/xhr_unittest.js',
       'webapp/crd/js/xmpp_connection_unittest.js',
       'webapp/crd/js/xmpp_login_handler_unittest.js',
       'webapp/crd/js/xmpp_stream_parser_unittest.js',
     ],
     'remoting_webapp_unittests_js_mock_files': [
       # Some proto files can be repurposed as simple mocks for the unittests.
       # Note that some defs in chrome_proto are overwritten by chrome_mocks.
       'webapp/crd/js/mock_signal_strategy.js',
       'webapp/js_proto/chrome_proto.js',
@@ skipping 367 matching lines @@
       '<(remoting_webapp_template_background)',
       '<(remoting_webapp_template_main)',
       '<(remoting_webapp_template_message_window)',
       '<(remoting_webapp_template_wcs_sandbox)',
       '<@(remoting_webapp_template_files)',
       '<@(remoting_webapp_crd_js_files)',
     ],
 
   },
 }