Move files instead of copying them.

chrome/installer/util/work_item_list.h

Index: chrome/installer/util/work_item_list.h
diff --git a/chrome/installer/util/work_item_list.h b/chrome/installer/util/work_item_list.h
index 18cb186d713f2c64546bb91897820bc75b61490b..c59272fc4b0267a207a872fd095df271bb9c8394 100644
--- a/chrome/installer/util/work_item_list.h
+++ b/chrome/installer/util/work_item_list.h
@@ -54,6 +54,10 @@ class WorkItemList : public WorkItem {
   // by key_path.
   bool AddDeleteTreeWorkItem(std::wstring root_path, std::wstring key_path);
 
+  // Add a MoveTreeWorkItem to the list of work items.
+  bool AddMoveTreeWorkItem(std::wstring source_path, std::wstring dest_path,
+                           std::wstring temp_dir);
+
   // Add a SetRegValueWorkItem that sets a registry value with REG_SZ type
   // at the key with specified path.
   bool AddSetRegValueWorkItem(HKEY predefined_root, std::wstring key_path,