Populates sourceDevice attribute into TouchEvent

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 34 matching lines @@
     protected:
         UIEventWithKeyState()
             : m_ctrlKey(false)
             , m_altKey(false)
             , m_shiftKey(false)
             , m_metaKey(false)
         {
         }
 
         UIEventWithKeyState(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
-                            int detail, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
-            : UIEvent(type, canBubble, cancelable, view, detail)
+            int detail, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, InputDevice* sourceDevice = nullptr)
+            : UIEvent(type, canBubble, cancelable, view, detail, sourceDevice)
             , m_ctrlKey(ctrlKey)
             , m_altKey(altKey)
             , m_shiftKey(shiftKey)
             , m_metaKey(metaKey)
         {
         }
 
         // Expose these so init functions can set them.
         bool m_ctrlKey : 1;
         bool m_altKey : 1;
         bool m_shiftKey : 1;
         bool m_metaKey : 1;
 
     private:
         static bool s_newTabModifierSetFromIsolatedWorld;
     };
 
     UIEventWithKeyState* findEventWithKeyState(Event*);
 
 } // namespace blink
 
 #endif // UIEventWithKeyState_h