Revert of Add best-effort/allow rollback flags on WorkItem.

chrome/installer/setup/install_worker.h

 // 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.
 //
 // This file contains the declarations of the installer functions that build
 // the WorkItemList used to install the application.
 
 #ifndef CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_
 #define CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_
 
@@ skipping 101 matching lines @@
                          const base::Version* current_version,
                          const base::Version& new_version,
                          WorkItemList* install_list);
 
 // Appends registration or unregistration work items to |work_item_list| for the
 // COM DLLs whose file names are given in |dll_files| and which reside in the
 // path |dll_folder|.
 // |system_level| specifies whether to call the system or user level DLL
 // registration entry points.
 // |do_register| says whether to register or unregister.
-// If |best_effort| is true, registration or unregistration failure doesn't
-// cause failure of |work_item_list|.
+// |may_fail| states whether this is best effort or not. If |may_fail| is true
+// then |work_item_list| will still succeed if the registration fails and
+// no registration rollback will be performed.
 void AddRegisterComDllWorkItems(const base::FilePath& dll_folder,
                                 const std::vector<base::FilePath>& dll_files,
                                 bool system_level,
                                 bool do_register,
-                                bool best_effort,
+                                bool ignore_failures,
                                 WorkItemList* work_item_list);
 
 void AddSetMsiMarkerWorkItem(const InstallerState& installer_state,
                              BrowserDistribution* dist,
                              bool set,
                              WorkItemList* work_item_list);
 
 // Adds work items to cleanup deprecated per-user registrations.
 void AddCleanupDeprecatedPerUserRegistrationsWorkItems(const Product& product,
                                                        WorkItemList* list);
@@ skipping 33 matching lines @@
                            WorkItemList* install_list);
 
 // Adds work items to remove "quick-enable-cf" from the multi-installer
 // binaries' version key.
 void AddQuickEnableChromeFrameWorkItems(const InstallerState& installer_state,
                                         WorkItemList* work_item_list);
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_