Use a direct include of strings headers in chrome/test/.

chrome/test/chromedriver/server/chromedriver_server.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 <stdio.h>
 #include <string>
 #include <vector>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/test/chromedriver/chrome/log.h"
 #include "chrome/test/chromedriver/chrome/version.h"
 #include "chrome/test/chromedriver/command_executor_impl.h"
 #include "chrome/test/chromedriver/server/http_handler.h"
 #include "chrome/test/chromedriver/server/http_response.h"
 #include "third_party/mongoose/mongoose.h"
 
 #if defined(OS_POSIX)
 #include <fcntl.h>
@@ skipping 169 matching lines @@
     // Close stderr on exec, so that Chrome log spew doesn't confuse users.
     fcntl(STDERR_FILENO, F_SETFD, FD_CLOEXEC);
   }
 #endif
 
   // Run until we receive command to shutdown.
   shutdown_event.Wait();
 
   return 0;
 }