Replace wstring with string16 in sandbox

sandbox/win/src/named_pipe_dispatcher.cc

 // Copyright (c) 2013 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 "sandbox/win/src/named_pipe_dispatcher.h"
 
 #include "base/basictypes.h"
 
 #include "sandbox/win/src/crosscall_client.h"
 #include "sandbox/win/src/interception.h"
@@ skipping 22 matching lines @@
 bool NamedPipeDispatcher::SetupService(InterceptionManager* manager,
                                        int service) {
   if (IPC_CREATENAMEDPIPEW_TAG == service)
     return INTERCEPT_EAT(manager, kKerneldllName, CreateNamedPipeW,
                          CREATE_NAMED_PIPE_ID, 36);
 
   return false;
 }
 
 bool NamedPipeDispatcher::CreateNamedPipe(
-    IPCInfo* ipc, std::wstring* name, DWORD open_mode, DWORD pipe_mode,
+    IPCInfo* ipc, base::string16* name, DWORD open_mode, DWORD pipe_mode,
     DWORD max_instances, DWORD out_buffer_size, DWORD in_buffer_size,
     DWORD default_timeout) {
   const wchar_t* pipe_name = name->c_str();
   CountedParameterSet<NameBased> params;
   params[NameBased::NAME] = ParamPickerMake(pipe_name);
 
   EvalResult eval = policy_base_->EvalPolicy(IPC_CREATENAMEDPIPEW_TAG,
                                              params.GetBase());
 
   HANDLE pipe;
   DWORD ret = NamedPipePolicy::CreateNamedPipeAction(eval, *ipc->client_info,
                                                      *name, open_mode,
                                                      pipe_mode, max_instances,
                                                      out_buffer_size,
                                                      in_buffer_size,
                                                      default_timeout, &pipe);
 
   ipc->return_info.win32_result = ret;
   ipc->return_info.handle = pipe;
   return true;
 }
 
 }  // namespace sandbox