Add WOW64 support to the installer registry work items

chrome/installer/util/delete_reg_value_work_item.h

Index: chrome/installer/util/delete_reg_value_work_item.h
diff --git a/chrome/installer/util/delete_reg_value_work_item.h b/chrome/installer/util/delete_reg_value_work_item.h
index 455735644c1690be0a72fd619d4d598feac1fd66..bd2999e7d739fa43f0e33fa3ee5479ae4d5a8c0d 100644
--- a/chrome/installer/util/delete_reg_value_work_item.h
+++ b/chrome/installer/util/delete_reg_value_work_item.h
@@ -39,7 +39,8 @@ class DeleteRegValueWorkItem : public WorkItem {
   };
 
   DeleteRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
-                         const std::wstring& value_name);
+                         const std::wstring& value_name,
+                         RegWow64ViewOption reg_wow64_option);
 
   // Root key of the target key under which the value is set. The root key can
   // only be one of the predefined keys on Windows.
@@ -51,6 +52,9 @@ class DeleteRegValueWorkItem : public WorkItem {
   // Name of the value to be set.
   std::wstring value_name_;
 
+  // Whether to force 32-bit or 64-bit view of the target key.
+  RegWow64ViewOption reg_wow64_option_;
+
   DeletionStatus status_;
 
   // Previous value.