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

chrome/installer/util/conditional_work_item_list.h

Index: chrome/installer/util/conditional_work_item_list.h
diff --git a/chrome/installer/util/conditional_work_item_list.h b/chrome/installer/util/conditional_work_item_list.h
index 1e90a78e60eb1551e7e4a97b652a22123eea1b71..97cdd7ae95d18a6006a702fe50189d90d53f11da 100644
--- a/chrome/installer/util/conditional_work_item_list.h
+++ b/chrome/installer/util/conditional_work_item_list.h
@@ -48,13 +48,13 @@ class ConditionRunIfFileExists : public WorkItem::Condition {
 // This class assumes ownership of original_condition.
 class Not : public WorkItem::Condition {
  public:
-   explicit Not(WorkItem::Condition* original_condition)
-     : original_condition_(original_condition) {}
+  explicit Not(WorkItem::Condition* original_condition);
+  ~Not();
+
   bool ShouldRun() const;
 
  private:
   scoped_ptr<WorkItem::Condition> original_condition_;
 };
 
-
 #endif  // CHROME_INSTALLER_UTIL_CONDITIONAL_WORK_ITEM_LIST_H_