Replace various ScrollableArea scroll methods with setScrollPosition

Source/platform/scroll/Scrollbar.cpp

 /*
  * Copyright (C) 2004, 2006, 2008 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 279 matching lines @@
 
     int delta = pos - m_pressedPos;
 
     if (draggingDocument) {
         if (m_draggingDocument)
             delta = pos - m_documentDragPos;
         m_draggingDocument = true;
         FloatPoint currentPosition = m_scrollableArea->scrollAnimator()->currentPosition();
         float destinationPosition = (m_orientation == HorizontalScrollbar ? currentPosition.x() : currentPosition.y()) + delta;
         destinationPosition = m_scrollableArea->clampScrollPosition(m_orientation, destinationPosition);
-        m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation, destinationPosition);
+        m_scrollableArea->setScrollPositionSingleAxis(m_orientation, destinationPosition, UserScroll);
         m_documentDragPos = pos;
         return;
     }
 
     if (m_draggingDocument) {
         delta += m_pressedPos - m_documentDragPos;
         m_draggingDocument = false;
     }
 
     // Drag the thumb.
     int thumbPos = theme()->thumbPosition(this);
     int thumbLen = theme()->thumbLength(this);
     int trackLen = theme()->trackLength(this);
     if (delta > 0)
         delta = std::min(trackLen - thumbLen - thumbPos, delta);
     else if (delta < 0)
         delta = std::max(-thumbPos, delta);
 
     float minPos = m_scrollableArea->minimumScrollPosition(m_orientation);
     float maxPos = m_scrollableArea->maximumScrollPosition(m_orientation);
     if (delta) {
         float newPosition = static_cast<float>(thumbPos + delta) * (maxPos - minPos) / (trackLen - thumbLen) + minPos;
-        m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation, newPosition);
+        m_scrollableArea->setScrollPositionSingleAxis(m_orientation, newPosition, UserScroll);
     }
 }
 
 void Scrollbar::setHoveredPart(ScrollbarPart part)
 {
     if (part == m_hoveredPart)
         return;
 
     if ((m_hoveredPart == NoPart || part == NoPart) && theme()->invalidateOnMouseEnterExit())
         invalidate();  // Just invalidate the whole scrollbar, since the buttons at either end change anyway.
@@ skipping 54 matching lines @@
     default:
         // By default, we assume that gestures don't deselect the scrollbar.
         return true;
     }
 }
 
 void Scrollbar::mouseMoved(const PlatformMouseEvent& evt)
 {
     if (m_pressedPart == ThumbPart) {
         if (theme()->shouldSnapBackToDragOrigin(this, evt)) {
-            if (m_scrollableArea)
-                m_scrollableArea->scrollToOffsetWithoutAnimation(m_orientation, m_dragOrigin + m_scrollableArea->minimumScrollPosition(m_orientation));
+            if (m_scrollableArea) {
+                m_scrollableArea->setScrollPositionSingleAxis(m_orientation, m_dragOrigin + m_scrollableArea->minimumScrollPosition(m_orientation), UserScroll);
+            }
         } else {
             moveThumb(m_orientation == HorizontalScrollbar ?
                       convertFromContainingWindow(evt.position()).x() :
                       convertFromContainingWindow(evt.position()).y(), theme()->shouldDragDocumentInsteadOfThumb(this, evt));
         }
         return;
     }
 
     if (m_pressedPart != NoPart)
         m_pressedPos = orientation() == HorizontalScrollbar ? convertFromContainingWindow(evt.position()).x() : convertFromContainingWindow(evt.position()).y();
@@ skipping 150 matching lines @@
     if (!m_scrollableArea)
         return 0;
 
     if (m_orientation == HorizontalScrollbar)
         return m_scrollableArea->scrollPosition().x() - m_scrollableArea->minimumScrollPosition().x();
 
     return m_scrollableArea->scrollPosition().y() - m_scrollableArea->minimumScrollPosition().y();
 }
 
 } // namespace blink