Use a direct include of strings headers in ipc/, jingle/, media/.

ipc/ipc_perftests.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 "build/build_config.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/perftimer.h"
 #include "base/pickle.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
-#include "ipc/ipc_descriptors.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
+#include "ipc/ipc_descriptors.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_sender.h"
 #include "ipc/ipc_test_base.h"
 
 namespace {
 
 // This test times the roundtrip IPC message cycle.
 //
 // TODO(brettw): Make this test run by default.
 
@@ skipping 239 matching lines @@
                        IPC::Channel::MODE_CLIENT,
                        &listener);
   listener.Init(&channel);
   CHECK(channel.Connect());
 
   base::MessageLoop::current()->Run();
   return 0;
 }
 
 }  // namespace