Replace wstring with string16 in sandbox

sandbox/win/src/registry_policy.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef SANDBOX_SRC_REGISTRY_POLICY_H__
 #define SANDBOX_SRC_REGISTRY_POLICY_H__
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/strings/string16.h"
 #include "sandbox/win/src/crosscall_server.h"
 #include "sandbox/win/src/nt_internals.h"
 #include "sandbox/win/src/policy_low_level.h"
 #include "sandbox/win/src/sandbox_policy.h"
 
 namespace sandbox {
 
 enum EvalResult;
 
 // This class centralizes most of the knowledge related to registry policy
 class RegistryPolicy {
  public:
   // Creates the required low-level policy rules to evaluate a high-level
   // policy rule for registry IO, in particular open or create actions.
   static bool GenerateRules(const wchar_t* name,
                             TargetPolicy::Semantics semantics,
                             LowLevelPolicy* policy);
 
   // Performs the desired policy action on a create request with an
   // API that is compatible with the IPC-received parameters.
   static bool CreateKeyAction(EvalResult eval_result,
                               const ClientInfo& client_info,
-                              const std::wstring &key,
+                              const base::string16 &key,
                               uint32 attributes,
                               HANDLE root_directory,
                               uint32 desired_access,
                               uint32 title_index,
                               uint32 create_options,
                               HANDLE* handle,
                               NTSTATUS* nt_status,
                               ULONG* disposition);
 
   // Performs the desired policy action on an open request with an
   // API that is compatible with the IPC-received parameters.
   static bool OpenKeyAction(EvalResult eval_result,
                               const ClientInfo& client_info,
-                              const std::wstring &key,
+                              const base::string16 &key,
                               uint32 attributes,
                               HANDLE root_directory,
                               uint32 desired_access,
                               HANDLE* handle,
                               NTSTATUS* nt_status);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_SRC_REGISTRY_POLICY_H__