Remove mouse events from Sky

sky/engine/platform/scroll/ScrollableArea.cpp

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  * Copyright (C) 2008, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 163 matching lines @@
     else if (behaviorString == "instant")
         behavior = ScrollBehaviorInstant;
     else if (behaviorString == "smooth")
         behavior = ScrollBehaviorSmooth;
     else
         return false;
 
     return true;
 }
 
-bool ScrollableArea::handleWheelEvent(const PlatformWheelEvent& wheelEvent)
-{
-    // ctrl+wheel events are used to trigger zooming, not scrolling.
-    if (wheelEvent.modifiers() & PlatformEvent::CtrlKey)
-        return false;
-
-    return scrollAnimator()->handleWheelEvent(wheelEvent);
-}
-
 void ScrollableArea::setScrollOffsetFromAnimation(const IntPoint& offset)
 {
     scrollPositionChanged(offset);
 }
 
 void ScrollableArea::mouseEnteredContentArea() const
 {
     if (ScrollAnimator* scrollAnimator = existingScrollAnimator())
         scrollAnimator->mouseEnteredContentArea();
 }
@@ skipping 100 matching lines @@
 {
     return scrollSize(orientation);
 }
 
 float ScrollableArea::pixelStep(ScrollbarOrientation) const
 {
     return 1;
 }
 
 } // namespace blink