Use a direct include of strings headers in remoting/.

remoting/host/host_main.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.
 //
 // This file implements the common entry point shared by all Chromoting Host
 // processes.
 
 #include "remoting/host/host_main.h"
 
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
-#include "base/stringprintf.h"
 #include "base/strings/stringize_macros.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "remoting/base/breakpad.h"
 #include "remoting/host/host_exit_codes.h"
 #include "remoting/host/logging.h"
 #include "remoting/host/usage_stats_consent.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
 #endif  // defined(OS_MACOSX)
 
@@ skipping 206 matching lines @@
 
   // Invoke the entry point.
   int exit_code = main_routine();
   if (exit_code == kUsageExitCode) {
     Usage(command_line->GetProgram());
   }
   return exit_code;
 }
 
 }  // namespace remoting