Remove GestureScrollUpdateWithoutPropagation event (blink)

Source/platform/PlatformEvent.h

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 34 matching lines @@
         MouseReleased,
         MouseScroll,
 
         // PlatformWheelEvent
         Wheel,
 
         // PlatformGestureEvent
         GestureScrollBegin,
         GestureScrollEnd,
         GestureScrollUpdate,
-        GestureScrollUpdateWithoutPropagation,
         GestureTap,
         GestureTapUnconfirmed,
         GestureTapDown,
         GestureShowPress,
         GestureTapDownCancel,
         GestureTwoFingerTap,
         GestureLongPress,
         GestureLongTap,
         GesturePinchBegin,
         GesturePinchEnd,
@@ skipping 69 matching lines @@
     }
 
     unsigned m_type;
     unsigned m_modifiers;
     double m_timestamp;
 };
 
 } // namespace blink
 
 #endif // PlatformEvent_h