Fix clang warning in test_process_killer_win.cc re taking address of temporary.

base/test/test_process_killer_win.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 "base/test/test_process_killer_win.h"
 
 #include <windows.h>
 #include <winternl.h>
 
 #include <algorithm>
@@ skipping 141 matching lines @@
  protected:
   string16 argument_to_find_;
 };
 
 }  // namespace
 
 namespace base {
 
 bool KillAllNamedProcessesWithArgument(const string16& process_name,
                                        const string16& argument) {
-  return base::KillProcesses(process_name, 0, &ArgumentFilter(argument));
+  ArgumentFilter argument_filter(argument);
+  return base::KillProcesses(process_name, 0, &argument_filter);
 }
 
 }  // namespace base