Add WOW64 support to the installer registry work items

chrome/installer/util/set_reg_value_work_item.h

Index: chrome/installer/util/set_reg_value_work_item.h
diff --git a/chrome/installer/util/set_reg_value_work_item.h b/chrome/installer/util/set_reg_value_work_item.h
index f6bc5733e385ffa124d5be28640a81f7a277d812..a98e41fc0d06c9b856e790d7f91c306a6f3f8448 100644
--- a/chrome/installer/util/set_reg_value_work_item.h
+++ b/chrome/installer/util/set_reg_value_work_item.h
@@ -46,15 +46,22 @@ class SetRegValueWorkItem : public WorkItem {
                       const std::wstring& key_path,
                       const std::wstring& value_name,
                       const std::wstring& value_data,
-                      bool overwrite);
+                      bool overwrite,
+                      REGSAM wow64_access);
 
-  SetRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
-                      const std::wstring& value_name, DWORD value_data,
-                      bool overwrite);
+  SetRegValueWorkItem(HKEY predefined_root,
+                      const std::wstring& key_path,
+                      const std::wstring& value_name,
+                      DWORD value_data,
+                      bool overwrite,
+                      REGSAM wow64_access);
 
-  SetRegValueWorkItem(HKEY predefined_root, const std::wstring& key_path,
-                      const std::wstring& value_name, int64 value_data,
-                      bool overwrite);
+  SetRegValueWorkItem(HKEY predefined_root,
+                      const std::wstring& key_path,
+                      const std::wstring& value_name,
+                      int64 value_data,
+                      bool overwrite,
+                      REGSAM wow64_access);
 
   // 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.
@@ -69,6 +76,9 @@ class SetRegValueWorkItem : public WorkItem {
   // Whether to overwrite the existing value under the target key.
   bool overwrite_;
 
+  // Whether to force 32-bit or 64-bit view of the target key.
+  REGSAM wow64_access_;
+
   // Type of data to store
   DWORD type_;
   std::vector<uint8> value_;