Update the remaining references to sys_string_conversions.h to its new location.

sandbox/win/tests/common/controller.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 "sandbox/win/tests/common/controller.h"
 
 #include <string>
 
 #include "base/process.h"
 #include "base/process_util.h"
-#include "base/sys_string_conversions.h"
+#include "base/strings/sys_string_conversions.h"
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/sandbox_factory.h"
 
 namespace {
 
 static const int kDefaultTimeout = 60000;
 
 // Constructs a full path to a file inside the system32 folder.
 std::wstring MakePathToSys32(const wchar_t* name, bool is_obj_man_path) {
   wchar_t windows_path[MAX_PATH] = {0};
@@ skipping 306 matching lines @@
 
     target->LowerToken();
   } else if (0 != _wcsicmp(argv[1], L"-child-no-sandbox")) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
 
   return command(argc - 4, argv + 4);
 }
 
 }  // namespace sandbox