Changed EBoxSizing 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 1556 matching lines @@
                                             oldOffset.height() / zoomFactor);
   if (box().shouldPlaceBlockDirectionScrollbarOnLogicalLeft()) {
     newOffset.setWidth(-newOffset.width());
     adjustedOldOffset.setWidth(-adjustedOldOffset.width());
   }
 
   LayoutSize difference(
       (currentSize + newOffset - adjustedOldOffset).expandedTo(minimumSize) -
       currentSize);
 
-  bool isBoxSizingBorder = box().style()->boxSizing() == BoxSizingBorderBox;
+  bool isBoxSizingBorder = box().style()->boxSizing() == EBoxSizing::kBorderBox;
 
   EResize resize = box().style()->resize();
   if (resize != RESIZE_VERTICAL && difference.width()) {
     if (element->isFormControlElement()) {
       // Make implicit margins from the theme explicit (see
       // <http://bugs.webkit.org/show_bug.cgi?id=9547>).
       element->setInlineStyleProperty(CSSPropertyMarginLeft,
                                       box().marginLeft() / zoomFactor,
                                       CSSPrimitiveValue::UnitType::Pixels);
       element->setInlineStyleProperty(CSSPropertyMarginRight,
@@ skipping 517 matching lines @@
 
 void PaintLayerScrollableArea::DelayScrollOffsetClampScope::
     clampScrollableAreas() {
   for (auto& scrollableArea : *s_needsClamp)
     scrollableArea->clampScrollOffsetAfterOverflowChange();
   delete s_needsClamp;
   s_needsClamp = nullptr;
 }
 
 }  // namespace blink