Replace wstring with string16 in sandbox

sandbox/win/src/process_thread_policy.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 "sandbox/win/src/process_thread_policy.h"
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "sandbox/win/src/ipc_tags.h"
@@ skipping 199 matching lines @@
                            DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
       ::CloseHandle(local_handle);
       return STATUS_ACCESS_DENIED;
     }
   }
   return status;
 }
 
 DWORD ProcessPolicy::CreateProcessWAction(EvalResult eval_result,
                                           const ClientInfo& client_info,
-                                          const std::wstring &app_name,
-                                          const std::wstring &command_line,
+                                          const base::string16 &app_name,
+                                          const base::string16 &command_line,
                                           PROCESS_INFORMATION* process_info) {
   // The only action supported is ASK_BROKER which means create the process.
   if (GIVE_ALLACCESS != eval_result && GIVE_READONLY != eval_result) {
     return ERROR_ACCESS_DENIED;
   }
 
   STARTUPINFO startup_info = {0};
   startup_info.cb = sizeof(startup_info);
   scoped_ptr_malloc<wchar_t> cmd_line(_wcsdup(command_line.c_str()));
 
   BOOL should_give_full_access = (GIVE_ALLACCESS == eval_result);
   if (!CreateProcessExWHelper(client_info.process, should_give_full_access,
                               app_name.c_str(), cmd_line.get(), NULL, NULL,
                               FALSE, 0, NULL, NULL, &startup_info,
                               process_info)) {
     return ERROR_ACCESS_DENIED;
   }
   return ERROR_SUCCESS;
 }
 
 }  // namespace sandbox