Dispatch change event for Input type=range for touchEnd

Source/core/html/forms/RangeInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 148 matching lines @@
         return;
     thumb->dragFrom(event->absoluteLocation());
 }
 
 void RangeInputType::handleTouchEvent(TouchEvent* event)
 {
     if (element().isDisabledOrReadOnly())
         return;
 
     if (event->type() == EventTypeNames::touchend) {
+        element().dispatchFormControlChangeEvent();
         event->setDefaultHandled();
         return;
     }
 
     TouchList* touches = event->targetTouches();
     if (touches->length() == 1) {
         sliderThumbElement()->setPositionFromPoint(touches->item(0)->absoluteLocation());
         event->setDefaultHandled();
     }
 }
@@ skipping 214 matching lines @@
             right = middle;
     }
     const Decimal closestLeft = middle ? m_tickMarkValues[middle - 1] : Decimal::infinity(Decimal::Negative);
     const Decimal closestRight = middle != m_tickMarkValues.size() ? m_tickMarkValues[middle] : Decimal::infinity(Decimal::Positive);
     if (closestRight - value < value - closestLeft)
         return closestRight;
     return closestLeft;
 }
 
 } // namespace WebCore