Changed EOverflow to an enum class and renamed its members

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
  * reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@gmail.com>
@@ skipping 588 matching lines @@
 }
 
 bool PaintLayerScrollableArea::userInputScrollable(
     ScrollbarOrientation orientation) const {
   if (box().isIntrinsicallyScrollable(orientation))
     return true;
 
   EOverflow overflowStyle = (orientation == HorizontalScrollbar)
                                 ? box().style()->overflowX()
                                 : box().style()->overflowY();
-  return (overflowStyle == OverflowScroll || overflowStyle == OverflowAuto ||
-          overflowStyle == OverflowOverlay);
+  return (overflowStyle == EOverflow::Scroll ||
+          overflowStyle == EOverflow::Auto ||
+          overflowStyle == EOverflow::Overlay);
 }
 
 bool PaintLayerScrollableArea::shouldPlaceVerticalScrollbarOnLeft() const {
   return box().shouldPlaceBlockDirectionScrollbarOnLogicalLeft();
 }
 
 int PaintLayerScrollableArea::pageStep(ScrollbarOrientation orientation) const {
   int length = (orientation == HorizontalScrollbar)
                    ? box().pixelSnappedClientWidth()
                    : box().pixelSnappedClientHeight();
@@ skipping 106 matching lines @@
       updateScrollCornerStyle();
 
     layer()->updateSelfPaintingLayer();
 
     // Force an update since we know the scrollbars have changed things.
     if (box().document().hasAnnotatedRegions())
       box().document().setAnnotatedRegionsDirty(true);
 
     // Our proprietary overflow: overlay value doesn't trigger a layout.
     if ((horizontalScrollbarShouldChange &&
-         box().style()->overflowX() != OverflowOverlay) ||
+         box().style()->overflowX() != EOverflow::Overlay) ||
         (verticalScrollbarShouldChange &&
-         box().style()->overflowY() != OverflowOverlay)) {
+         box().style()->overflowY() != EOverflow::Overlay)) {
       if ((verticalScrollbarShouldChange && box().isHorizontalWritingMode()) ||
           (horizontalScrollbarShouldChange &&
            !box().isHorizontalWritingMode())) {
         box().setPreferredLogicalWidthsDirty();
       }
       if (relayoutIsPrevented) {
         // We're not doing re-layout right now, but we still want to
         // add the scrollbar to the logical width now, to facilitate parent
         // layout.
         box().updateLogicalWidth();
@@ skipping 198 matching lines @@
   if (box().isLayoutBlock() &&
       (horizontalScrollbarChanged || verticalScrollbarChanged)) {
     toLayoutBlock(box()).scrollbarsChanged(
         horizontalScrollbarChanged, verticalScrollbarChanged,
         LayoutBlock::ScrollbarChangeContext::StyleChange);
   }
 
   // With overflow: scroll, scrollbars are always visible but may be disabled.
   // When switching to another value, we need to re-enable them (see bug 11985).
   if (hasHorizontalScrollbar() && oldStyle &&
-      oldStyle->overflowX() == OverflowScroll &&
-      box().style()->overflowX() != OverflowScroll) {
+      oldStyle->overflowX() == EOverflow::Scroll &&
+      box().style()->overflowX() != EOverflow::Scroll) {
     horizontalScrollbar()->setEnabled(true);
   }
 
   if (hasVerticalScrollbar() && oldStyle &&
-      oldStyle->overflowY() == OverflowScroll &&
-      box().style()->overflowY() != OverflowScroll) {
+      oldStyle->overflowY() == EOverflow::Scroll &&
+      box().style()->overflowY() != EOverflow::Scroll) {
     verticalScrollbar()->setEnabled(true);
   }
 
   // FIXME: Need to detect a swap from custom to native scrollbars (and vice
   // versa).
   if (horizontalScrollbar())
     horizontalScrollbar()->styleChanged();
   if (verticalScrollbar())
     verticalScrollbar()->styleChanged();
 
@@ skipping 1057 matching lines @@
 
 void PaintLayerScrollableArea::DelayScrollOffsetClampScope::
     clampScrollableAreas() {
   for (auto& scrollableArea : *s_needsClamp)
     scrollableArea->clampScrollOffsetAfterOverflowChange();
   delete s_needsClamp;
   s_needsClamp = nullptr;
 }
 
 }  // namespace blink