base/win: Add documentation to RegKey::Read/Write functions.

chrome_frame/policy_settings.cc

Index: chrome_frame/policy_settings.cc
diff --git a/chrome_frame/policy_settings.cc b/chrome_frame/policy_settings.cc
index 97c08107bf57eb4f56949d9fe5b9f3b49c2efdc9..baafb07674cc0f8f386d0315c41edd7827221493 100644
--- a/chrome_frame/policy_settings.cc
+++ b/chrome_frame/policy_settings.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -72,8 +72,8 @@ void PolicySettings::ReadUrlSettings(
   for (int i = 0; i < arraysize(kRootKeys); ++i) {
     if ((config_key.Open(kRootKeys[i], policy::kRegistrySubKey,
                          KEY_READ) == ERROR_SUCCESS) &&
-        (config_key.ReadValueDW(settings_value.c_str(),
-                                &value) == ERROR_SUCCESS)) {
+        (config_key.ReadValue(settings_value.c_str(),
+                              &value) == ERROR_SUCCESS)) {
         break;
     }
   }