Add best-effort/allow rollback flags on WorkItem.

chrome/installer/util/conditional_work_item_list.cc

 // Copyright (c) 2010 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/util/conditional_work_item_list.h"
 
 #include "base/files/file_util.h"
 #include "base/logging.h"
 
 ConditionalWorkItemList::ConditionalWorkItemList(Condition* condition)
     : condition_(condition) {
 }
 
 ConditionalWorkItemList::~ConditionalWorkItemList() {}
 
-bool ConditionalWorkItemList::Do() {
+bool ConditionalWorkItemList::DoImpl() {
   VLOG(1) << "Evaluating " << log_message_ << " condition...";
   if (condition_.get() && condition_->ShouldRun()) {
     VLOG(1) << "Beginning conditional work item list";
-    return WorkItemList::Do();
+    return WorkItemList::DoImpl();
   }
   VLOG(1) << "No work to do in condition work item list "
           << log_message_;
   return true;
 }
 
-void ConditionalWorkItemList::Rollback() {
+void ConditionalWorkItemList::RollbackImpl() {
   VLOG(1) << "Rolling back conditional list " << log_message_;
-  WorkItemList::Rollback();
+  WorkItemList::RollbackImpl();
 }
 
 // Pre-defined conditions:
 //------------------------------------------------------------------------------
 bool ConditionRunIfFileExists::ShouldRun() const {
   return base::PathExists(key_path_);
 }
 
 Not::Not(WorkItem::Condition* original_condition)
     : original_condition_(original_condition) {
 }
 
 Not::~Not() {
 }
 
 bool Not::ShouldRun() const {
   return !original_condition_->ShouldRun();
 }