Introduce NavigatorWebDriver interface

third_party/WebKit/Source/core/frame/Navigator.h

 /*
     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 34 matching lines @@
                                     public Supplementable<Navigator> {
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(Navigator);
 
  public:
   static Navigator* Create(LocalFrame* frame) { return new Navigator(frame); }
 
   // NavigatorCookies
   bool cookieEnabled() const;
 
+  bool webdriver() const;
+
   String productSub() const;
   String vendor() const;
   String vendorSub() const;
 
   String userAgent() const override;
 
   // NavigatorLanguage
   Vector<String> languages() override;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   explicit Navigator(LocalFrame*);
 };
 
 }  // namespace blink
 
 #endif  // Navigator_h