Remove Event.relatedTargetScoped and update event path calculation for relatedTarget

third_party/WebKit/Source/core/events/UIEventWithKeyState.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * 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.
@@ skipping 39 matching lines @@
     PlatformEvent::Modifiers modifiers() const { return static_cast<PlatformEvent::Modifiers>(m_modifiers); }
 
 protected:
     UIEventWithKeyState()
         : m_modifiers(0)
     {
     }
 
     UIEventWithKeyState(const AtomicString& type, bool canBubble, bool cancelable, AbstractView*,
         int detail, PlatformEvent::Modifiers, double platformTimeStamp, InputDeviceCapabilities* sourceCapabilities = nullptr);
-    UIEventWithKeyState(const AtomicString& type, bool canBubble, bool cancelable, EventTarget* relatedTarget, AbstractView*,
-        int detail, PlatformEvent::Modifiers, double platformTimeStamp, InputDeviceCapabilities* sourceCapabilities = nullptr);
     UIEventWithKeyState(const AtomicString& type, const EventModifierInit& initializer);
     void initModifiers(bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
 
     unsigned m_modifiers;
 
 private:
     static bool s_newTabModifierSetFromIsolatedWorld;
 };
 
 UIEventWithKeyState* findEventWithKeyState(Event*);
 
 } // namespace blink
 
 #endif // UIEventWithKeyState_h