Use a direct include of strings headers in chromeos/.

chromeos/dbus/debug_daemon_client.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 <fcntl.h>
 #include <unistd.h>
 
 #include "chromeos/dbus/debug_daemon_client.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/chromeos/chromeos_version.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop.h"
 #include "base/platform_file.h"
 #include "base/posix/eintr_wrapper.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/threading/worker_pool.h"
 #include "dbus/bus.h"
 #include "dbus/message.h"
 #include "dbus/object_path.h"
 #include "dbus/object_proxy.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
@@ skipping 606 matching lines @@
 // static
 DebugDaemonClient* DebugDaemonClient::Create(DBusClientImplementationType type,
                                    dbus::Bus* bus) {
   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
     return new DebugDaemonClientImpl(bus);
   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
   return new DebugDaemonClientStubImpl();
 }
 
 }  // namespace chromeos