chrome/installer/util: Fix warnings found by clang chromium-style plugin on Windows.

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)
@@ skipping 17 matching lines @@
   VLOG(1) << "Rolling back conditional list " << log_message_;
   WorkItemList::Rollback();
 }
 
 // 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();
 }
-