Implement additional parts of the new ui for CBD.

components/browsing_data/core/pref_names.cc

 // Copyright 2016 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.
 
 #include "components/browsing_data/core/pref_names.h"
 
 #include "components/pref_registry/pref_registry_syncable.h"
 
 namespace browsing_data {
 
@@ skipping 10 matching lines @@
 const char kDeletePasswords[] = "browser.clear_data.passwords";
 const char kDeleteFormData[] = "browser.clear_data.form_data";
 const char kDeleteHostedAppsData[] = "browser.clear_data.hosted_apps_data";
 const char kDeleteMediaLicenses[] = "browser.clear_data.media_licenses";
 
 // Other Clear Browsing Data preferences.
 const char kLastClearBrowsingDataTime[] =
   "browser.last_clear_browsing_data_time";
 const char kClearBrowsingDataHistoryNoticeShownTimes[] =
   "browser.clear_data.history_notice_shown_times";
+const char kLastClearBrowsingDataTab[] = "browser.last_clear_browsing_data_tab";
 
 void RegisterBrowserUserPrefs(user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterIntegerPref(
       kDeleteTimePeriod, 0,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       kDeleteBrowsingHistory, true,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       kDeleteCache, true,
@@ skipping 15 matching lines @@
       kDeleteDownloadHistory, true,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       kDeleteHostedAppsData, false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterBooleanPref(
       kDeleteMediaLicenses, false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
   registry->RegisterInt64Pref(prefs::kLastClearBrowsingDataTime, 0);
 #endif  // !defined(OS_IOS)
+
+#if defined(OS_ANDROID)
+  registry->RegisterIntegerPref(
+      kLastClearBrowsingDataTab, 0,
+      user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
+#endif
 }
 
 }  // namespace prefs
 
 }  // namespace browsing_data