Expose scroll customization for touch to JS (behind REF).

Source/core/page/scrolling/ScrollState.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/page/scrolling/ScrollState.h"
 
 #include "core/dom/Element.h"
 #include "core/dom/ExceptionCode.h"
 
@@ skipping 37 matching lines @@
     if (fabs(x) > fabs(m_deltaX) || fabs(y) > fabs(m_deltaY)) {
         exceptionState.throwDOMException(InvalidModificationError, "Can't change direction of delta using consumeDelta");
         return;
     }
     consumeDeltaNative(x, y);
 }
 
 void ScrollState::distributeToScrollChainDescendant()
 {
     if (!m_scrollChain.isEmpty())
-        m_scrollChain.takeFirst()->distributeScroll(*this);
+        m_scrollChain.takeFirst()->callDistributeScroll(*this);
 }
 
 void ScrollState::consumeDeltaNative(double x, double y)
 {
     m_deltaX -= x;
     m_deltaY -= y;
 
     if (x || y)
         m_deltaConsumedForScrollSequence = true;
 }
 
 } // namespace blink