Add WOW64 support to the installer registry work items

chrome/installer/util/copy_reg_key_work_item.h

Index: chrome/installer/util/copy_reg_key_work_item.h
diff --git a/chrome/installer/util/copy_reg_key_work_item.h b/chrome/installer/util/copy_reg_key_work_item.h
index 7a84b63cb62b37d1693e21fb1fe1173f47371e94..9d65ff4ba3a531bdfbf5598b339c32689954602a 100644
--- a/chrome/installer/util/copy_reg_key_work_item.h
+++ b/chrome/installer/util/copy_reg_key_work_item.h
@@ -33,7 +33,8 @@ class CopyRegKeyWorkItem : public WorkItem {
   CopyRegKeyWorkItem(HKEY predefined_key,
                      const std::wstring& source_key_path,
                      const std::wstring& dest_key_path,
-                     CopyOverWriteOption overwrite_option);
+                     CopyOverWriteOption overwrite_option,
+                     RegWow64ViewOption reg_wow64_option);
 
   // Root key in which we operate. The root key must be one of the predefined
   // keys on Windows.
@@ -48,6 +49,9 @@ class CopyRegKeyWorkItem : public WorkItem {
   // WorkItem::ALWAYS or WorkItem::IF_NOT_PRESENT.
   CopyOverWriteOption overwrite_option_;
 
+  // Whether to force 32-bit or 64-bit view of the target key.
+  RegWow64ViewOption reg_wow64_option_;
+
   // Backup of the destination key.
   RegistryKeyBackup backup_;