Use a direct include of strings headers in chrome/browser/d*/.

chrome/browser/devtools/devtools_window.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 "chrome/browser/devtools/devtools_window.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
-#include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/api/debugger/debugger_api.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/infobars/confirm_infobar_delegate.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
@@ skipping 1142 matching lines @@
 DevToolsDockSide DevToolsWindow::SideFromString(
     const std::string& dock_side) {
   if (dock_side == kDockSideRight)
     return DEVTOOLS_DOCK_SIDE_RIGHT;
   if (dock_side == kDockSideBottom)
     return DEVTOOLS_DOCK_SIDE_BOTTOM;
   if (dock_side == kDockSideMinimized)
     return DEVTOOLS_DOCK_SIDE_MINIMIZED;
   return DEVTOOLS_DOCK_SIDE_UNDOCKED;
 }