Merge 101684 - Added CopyRegKeyWorkItem in support of IE low rights policy fixes.

chrome/installer/util/work_item.h

Index: chrome/installer/util/work_item.h
===================================================================
--- chrome/installer/util/work_item.h	(revision 104337)
+++ chrome/installer/util/work_item.h	(working copy)
@@ -17,6 +17,7 @@
 
 #include "base/basictypes.h"
 
+class CopyRegKeyWorkItem;
 class CopyTreeWorkItem;
 class CreateDirWorkItem;
 class CreateRegKeyWorkItem;
@@ -58,6 +59,12 @@
 
   virtual ~WorkItem();
 
+  // Create a CopyRegKeyWorkItem that recursively copies a given registry key.
+  static CopyRegKeyWorkItem* CreateCopyRegKeyWorkItem(
+      HKEY predefined_root,
+      const std::wstring& source_key_path,
+      const std::wstring& dest_key_path);
+
   // Create a CopyTreeWorkItem that recursively copies a file system hierarchy
   // from source path to destination path.
   // * If overwrite_option is ALWAYS, the created CopyTreeWorkItem always