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

chrome/browser/policy/configuration_policy_provider_delegate_win.cc

 // 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.
 
 #include "chrome/browser/policy/configuration_policy_provider_delegate_win.h"
 
 #include <string.h>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
@@ skipping 122 matching lines @@
   bool ret = GetRegistryPolicyInteger(value_name, &local_result);
   if (ret)
     *result = local_result != 0;
   return ret;
 }
 
 bool ConfigurationPolicyProviderDelegateWin::GetRegistryPolicyInteger(
     const string16& value_name, uint32* result) const {
   DWORD value = 0;
   RegKey policy_key(HKEY_LOCAL_MACHINE, kRegistrySubKey, KEY_READ);
-  if (policy_key.ReadValueDW(value_name.c_str(), &value) == ERROR_SUCCESS) {
+  if (policy_key.ReadValue(value_name.c_str(), &value) == ERROR_SUCCESS) {
     *result = value;
     return true;
   }
 
   if (policy_key.Open(HKEY_CURRENT_USER, kRegistrySubKey, KEY_READ) ==
       ERROR_SUCCESS) {
-    if (policy_key.ReadValueDW(value_name.c_str(), &value) == ERROR_SUCCESS) {
+    if (policy_key.ReadValue(value_name.c_str(), &value) == ERROR_SUCCESS) {
       *result = value;
       return true;
     }
   }
   return false;
 }
 
 }  // namespace policy