Replace wstring with string16 in sandbox

sandbox/win/src/crosscall_server.cc

 // Copyright (c) 2012 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 <string>
 #include <vector>
 
 #include "sandbox/win/src/crosscall_server.h"
 #include "sandbox/win/src/crosscall_params.h"
 #include "sandbox/win/src/crosscall_client.h"
@@ skipping 219 matching lines @@
   void* start = GetRawParameter(index, &size, &type);
   if ((NULL == start) || (sizeof(void*) != size) || (VOIDPTR_TYPE != type)) {
     return false;
   }
   *param = *(reinterpret_cast<void**>(start));
   return true;
 }
 
 // Covers the common case of reading a string. Note that the string is not
 // scanned for invalid characters.
-bool CrossCallParamsEx::GetParameterStr(uint32 index, std::wstring* string) {
+bool CrossCallParamsEx::GetParameterStr(uint32 index, base::string16* string) {
   uint32 size = 0;
   ArgType type;
   void* start = GetRawParameter(index, &size, &type);
   if (WCHAR_TYPE != type) {
     return false;
   }
 
   // Check if this is an empty string.
   if (size == 0) {
     *string = L"";
@@ skipping 41 matching lines @@
   for (; it != ipc_calls_.end(); ++it) {
     if (it->params.Matches(ipc)) {
       *callback = it->callback;
       return this;
     }
   }
   return NULL;
 }
 
 }  // namespace sandbox