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

chrome/installer/util/conditional_work_item_list.cc

Index: chrome/installer/util/conditional_work_item_list.cc
diff --git a/chrome/installer/util/conditional_work_item_list.cc b/chrome/installer/util/conditional_work_item_list.cc
index ad669448a18bd93f6ee96b972caefce60419f775..fcf195584bc3b30881b0bd3972e8218914ee188f 100644
--- a/chrome/installer/util/conditional_work_item_list.cc
+++ b/chrome/installer/util/conditional_work_item_list.cc
@@ -35,7 +35,13 @@ 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();
 }
-