Set up switches for user language detection and translation events.

components/sync/driver/sync_driver_switches.h

 // 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.
 
 #ifndef COMPONENTS_SYNC_DRIVER_SYNC_DRIVER_SWITCHES_H_
 #define COMPONENTS_SYNC_DRIVER_SYNC_DRIVER_SWITCHES_H_
 
 #include "base/feature_list.h"
 
 namespace switches {
 
 // Defines all the command-line switches used by sync driver. All switches in
 // alphabetical order. The switches should be documented alongside the
 // definition of their values in the .cc file.
 extern const char kSyncDeferredStartupTimeoutSeconds[];
 extern const char kSyncDisableDeferredStartup[];
 extern const char kSyncEnableGetUpdateAvoidance[];
 extern const char kSyncServiceURL[];
 extern const char kSyncShortInitialRetryOverride[];
 extern const char kSyncShortNudgeDelayForTest[];
 
 extern const base::Feature kSyncClearDataOnPassphraseEncryption;
 extern const base::Feature kSyncUserEvents;
+extern const base::Feature kSyncUserLanguageDetectionEvents;
+extern const base::Feature kSyncUserTranslationEvents;
 extern const base::Feature kSyncUSSAutocomplete;
 extern const base::Feature kSyncUSSTypedURL;
 extern const base::Feature kSyncUSSDeviceInfo;
 
 }  // namespace switches
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_DRIVER_SWITCHES_H_