Add best-effort/allow rollback flags on WorkItem.

chrome/installer/setup/install.cc

 // Copyright (c) 2012 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 "chrome/installer/setup/install.h"
 
 #include <windows.h>
 #include <shlobj.h>
 #include <time.h>
 
@@ skipping 738 matching lines @@
 // NOTE: Should the work done here, on Active Setup, change:
 // kActiveSetupMajorVersion in update_active_setup_version_work_item.cc needs to
 // be increased for Active Setup to invoke this again for all users of this
 // install. It may also be invoked again when a system-level chrome install goes
 // through an OS upgrade.
 void HandleActiveSetupForBrowser(const base::FilePath& installation_root,
                                  const installer::Product& chrome,
                                  bool force) {
   DCHECK(chrome.is_chrome());
 
-  NoRollbackWorkItemList cleanup_list;
-  AddCleanupDeprecatedPerUserRegistrationsWorkItems(chrome, &cleanup_list);
-  cleanup_list.Do();
+  std::unique_ptr<WorkItemList> cleanup_list(WorkItem::CreateWorkItemList());
+  cleanup_list->set_log_message("Cleanup deprecated per-user registrations");
+  cleanup_list->set_rollback_enabled(false);
+  cleanup_list->set_best_effort(true);
+  AddCleanupDeprecatedPerUserRegistrationsWorkItems(chrome, cleanup_list.get());
+  cleanup_list->Do();
 
   // Only create shortcuts on Active Setup if the first run sentinel is not
   // present for this user (as some shortcuts used to be installed on first
   // run and this could otherwise re-install shortcuts for users that have
   // already deleted them in the past).
   // Decide whether to create the shortcuts or simply replace existing
   // shortcuts; if the decision is to create them, only shortcuts whose matching
   // all-users shortcut isn't present on the system will be created.
   InstallShortcutOperation install_operation =
       (!force && InstallUtil::IsFirstRunSentinelPresent())
           ? INSTALL_SHORTCUT_REPLACE_EXISTING
           : INSTALL_SHORTCUT_CREATE_EACH_IF_NO_SYSTEM_LEVEL;
 
   // Read master_preferences copied beside chrome.exe at install.
   MasterPreferences prefs(installation_root.AppendASCII(kDefaultMasterPrefs));
   base::FilePath chrome_exe(installation_root.Append(kChromeExe));
   CreateOrUpdateShortcuts(
       chrome_exe, chrome, prefs, CURRENT_USER, install_operation);
 
   UpdateDefaultBrowserBeaconForPath(chrome_exe);
 }
 
 }  // namespace installer