Cleanup ScrollableArea scrolling API

Source/core/frame/FrameView.cpp

Index: Source/core/frame/FrameView.cpp
diff --git a/Source/core/frame/FrameView.cpp b/Source/core/frame/FrameView.cpp
index d2f308350872ea4aa90113b78f477a5a2a38fa3b..fbaf10c328a1c08751e39ea685d263d40e828370 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -1501,10 +1501,10 @@ void FrameView::setScrollPosition(const DoublePoint& scrollPoint, ScrollType scr
     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);
     }
 }