Cleanup ScrollableArea scrolling API

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 1483 matching lines @@
     DoublePoint newScrollPosition = adjustScrollPositionWithinRange(scrollPoint);
     if (newScrollPosition == scrollPositionDouble())
         return;
 
     if (scrollBehavior == ScrollBehaviorAuto)
         scrollBehavior = scrollBehaviorStyle();
 
     if (scrollBehavior == ScrollBehaviorInstant) {
         DoubleSize newOffset(newScrollPosition.x(), newScrollPosition.y());
         // TODO(bokan): Why do we need to go through updateScrollbars? If not, we can
-        // just delete this whole method and use the base version.
+        // just delete this behavior switch and use the base method.
         updateScrollbars(newOffset);
     } else {
-        ScrollableArea::setScrollPosition(newScrollPosition, ProgrammaticScroll, ScrollBehaviorSmooth);
+        ScrollableArea::setScrollPosition(newScrollPosition, scrollType, ScrollBehaviorSmooth);
     }
 }
 
 void FrameView::setElasticOverscroll(const FloatSize& elasticOverscroll)
 {
     m_elasticOverscroll = elasticOverscroll;
     if (m_horizontalScrollbar) {
         float delta = elasticOverscroll.width() - m_horizontalScrollbar->elasticOverscroll();
         if (delta != 0) {
             m_horizontalScrollbar->setElasticOverscroll(elasticOverscroll.width());
@@ skipping 2491 matching lines @@
 
     if (!graphicsLayer)
         return;
 
     DeprecatedPaintLayer::mapRectToPaintInvalidationBacking(localFrame->contentLayoutObject(), paintInvalidationContainer, viewRect);
 
     graphicsLayerTimingRequests.add(graphicsLayer, Vector<std::pair<int64_t, WebRect>>()).storedValue->value.append(std::make_pair(m_frame->frameID(), enclosingIntRect(viewRect)));
 }
 
 } // namespace blink