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..582d3bd758795caac25a939c2eba76beb91f73bf 100644
--- a/chrome/installer/util/delete_reg_value_work_item.h
+++ b/chrome/installer/util/delete_reg_value_work_item.h
@@ -38,7 +38,9 @@ class DeleteRegValueWorkItem : public WorkItem {
     VALUE_UNCHANGED
   };
 
-  DeleteRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
+  DeleteRegValueWorkItem(HKEY predefined_root,
+                         const std::wstring& key_path,
+                         REGSAM wow64_acccess,
                          const std::wstring& value_name);
 
   // Root key of the target key under which the value is set. The root key can
@@ -51,6 +53,9 @@ 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.
+  REGSAM wow64_access_;
+
   DeletionStatus status_;
 
   // Previous value.