Use a direct include of strings headers in base/.

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>
 
 #include "base/logging.h"
 #include "base/process_util.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/win/scoped_handle.h"
 
 namespace {
 
 typedef LONG WINAPI
 NtQueryInformationProcess(
   IN HANDLE ProcessHandle,
   IN PROCESSINFOCLASS ProcessInformationClass,
   OUT PVOID ProcessInformation,
   IN ULONG ProcessInformationLength,
@@ skipping 132 matching lines @@
 
 namespace base {
 
 bool KillAllNamedProcessesWithArgument(const string16& process_name,
                                        const string16& argument) {
   ArgumentFilter argument_filter(argument);
   return base::KillProcesses(process_name, 0, &argument_filter);
 }
 
 }  // namespace base