Add WOW64 support to the installer registry work items

chrome/installer/util/install_util.h

Index: chrome/installer/util/install_util.h
diff --git a/chrome/installer/util/install_util.h b/chrome/installer/util/install_util.h
index 1c3d0cba605b66d8c30993d4ad976ad3dc9797b1..f292b3bd7ac443244f5f0512a002ad8414980424 100644
--- a/chrome/installer/util/install_util.h
+++ b/chrome/installer/util/install_util.h
@@ -113,7 +113,9 @@ class InstallUtil {
   static bool GetEULASentinelFilePath(base::FilePath* path);
 
   // Deletes the registry key at path key_path under the key given by root_key.
-  static bool DeleteRegistryKey(HKEY root_key, const base::string16& key_path);
+  static LONG DeleteRegistryKey(HKEY root_key,
+                                const base::string16& key_path,
+                                REGSAM wow64_access);
 
   // Deletes the registry value named value_name at path key_path under the key
   // given by reg_root.
@@ -144,7 +146,8 @@ class InstallUtil {
       const base::string16& key_to_delete_path,
       const base::string16& key_to_test_path,
       const wchar_t* value_name,
-      const RegistryValuePredicate& predicate);
+      const RegistryValuePredicate& predicate,
+      REGSAM wow64_access);
 
   // Deletes the value |value_name| in the key |key_path| under |root_key| iff
   // its current value satisfies |predicate|.  |value_name| may be either NULL
@@ -153,7 +156,8 @@ class InstallUtil {
       HKEY root_key,
       const wchar_t* key_path,
       const wchar_t* value_name,
-      const RegistryValuePredicate& predicate);
+      const RegistryValuePredicate& predicate,
+      REGSAM wow64_access);
 
   // A predicate that performs a case-sensitive string comparison.
   class ValueEquals : public RegistryValuePredicate {