Use a direct include of strings headers in remoting/.

remoting/host/ipc_util_win.cc

 // Copyright 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 "remoting/host/ipc_util.h"
 
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/win_util.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "remoting/host/win/security_descriptor.h"
 
 using base::win::ScopedHandle;
 
 namespace remoting {
@@ skipping 104 matching lines @@
     LOG_GETLASTERROR(ERROR) <<
         "Failed to create the server end of the Chromoting IPC channel";
     return false;
   }
 
   *pipe_out = pipe.Pass();
   return true;
 }
 
 } // namespace remoting