Add new E2E sync multi profiles tests. This should not affect any existing

chrome/chrome_tests.gypi

 # Copyright 2013 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': {
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
       'browser/extensions/browsertest_util.cc',
@@ skipping 1293 matching lines @@
       'browser/sync/test/integration/single_client_typed_urls_sync_test.cc',
       'browser/sync/test/integration/single_client_wifi_credentials_sync_test.cc',
       'browser/sync/test/integration/sync_auth_test.cc',
       'browser/sync/test/integration/sync_errors_test.cc',
       'browser/sync/test/integration/sync_exponential_backoff_test.cc',
       'browser/sync/test/integration/two_client_app_list_sync_test.cc',
       'browser/sync/test/integration/two_client_apps_sync_test.cc',
       'browser/sync/test/integration/two_client_autofill_sync_test.cc',
       'browser/sync/test/integration/two_client_bookmarks_sync_test.cc',
       'browser/sync/test/integration/two_client_dictionary_sync_test.cc',
+      'browser/sync/test/integration/two_client_e2e_test.cc',
       'browser/sync/test/integration/two_client_extension_settings_and_app_settings_sync_test.cc',
       'browser/sync/test/integration/two_client_extensions_sync_test.cc',
       'browser/sync/test/integration/two_client_passwords_sync_test.cc',
       'browser/sync/test/integration/two_client_preferences_sync_test.cc',
       'browser/sync/test/integration/two_client_search_engines_sync_test.cc',
       'browser/sync/test/integration/two_client_sessions_sync_test.cc',
       'browser/sync/test/integration/two_client_themes_sync_test.cc',
       'browser/sync/test/integration/two_client_typed_urls_sync_test.cc',
       'browser/sync/test/integration/two_client_wifi_credentials_sync_test.cc',
     ],
@@ skipping 17 matching lines @@
       'browser/sync/test/integration/migration_waiter.cc',
       'browser/sync/test/integration/migration_waiter.h',
       'browser/sync/test/integration/migration_watcher.cc',
       'browser/sync/test/integration/migration_watcher.h',
       'browser/sync/test/integration/multi_client_status_change_checker.cc',
       'browser/sync/test/integration/multi_client_status_change_checker.h',
       'browser/sync/test/integration/passwords_helper.cc',
       'browser/sync/test/integration/passwords_helper.h',
       'browser/sync/test/integration/p2p_invalidation_forwarder.cc',
       'browser/sync/test/integration/p2p_invalidation_forwarder.h',
+      'browser/sync/test/integration/p2p_sync_refresher.cc',
+      'browser/sync/test/integration/p2p_sync_refresher.h',
       'browser/sync/test/integration/preferences_helper.cc',
       'browser/sync/test/integration/preferences_helper.h',
       'browser/sync/test/integration/profile_sync_service_harness.cc',
       'browser/sync/test/integration/profile_sync_service_harness.h',
       'browser/sync/test/integration/quiesce_status_change_checker.cc',
       'browser/sync/test/integration/quiesce_status_change_checker.h',
       'browser/sync/test/integration/retry_verifier.cc',
       'browser/sync/test/integration/retry_verifier.h',
       'browser/sync/test/integration/search_engines_helper.cc',
       'browser/sync/test/integration/search_engines_helper.h',
@@ skipping 1896 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }