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

chrome/browser/automation/automation_util.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/automation/automation_util.h"
 
 #include <string>
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "base/bind.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 "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/automation/automation_provider.h"
 #include "chrome/browser/automation/automation_provider_json.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/printing/print_preview_dialog_controller.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 608 matching lines @@
       const extensions::Extension* extension;
       return GetExtensionForId(id, profile, &extension);
     }
     default:
       break;
   }
   return false;
 }
 
 }  // namespace automation_util