Add ScrollDirectionPhysical enum in Scroll types.

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 3250 matching lines @@
 void FrameView::setScrollOffset(const IntPoint& offset)
 {
     scrollTo(DoublePoint(adjustScrollPositionWithinRange(offset)));
 }
 
 void FrameView::setScrollOffset(const DoublePoint& offset)
 {
     scrollTo(adjustScrollPositionWithinRange(offset));
 }
 
-bool FrameView::scroll(ScrollDirection direction, ScrollGranularity granularity, float delta)
-{
-    ScrollDirection physicalDirection =
-        toPhysicalDirection(direction, isVerticalDocument(), isFlippedDocument());
-
-    return ScrollableArea::scroll(physicalDirection, granularity, delta);
-}
-
 void FrameView::windowResizerRectChanged()
 {
     updateScrollbars(scrollOffsetDouble());
 }
 
 bool FrameView::hasOverlayScrollbars() const
 {
 
     return (m_horizontalScrollbar && m_horizontalScrollbar->isOverlayScrollbar())
         || (m_verticalScrollbar && m_verticalScrollbar->isOverlayScrollbar());
@@ skipping 784 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