Make EBorderStyle an enum class.

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/BoxPainter.h"
 
 #include "core/HTMLNames.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/layout/ImageQualityController.h"
@@ skipping 298 matching lines @@
     // TODO(fmalita): we should be able to fold these parameters into
     // BoxBorderInfo or BoxDecorationData and avoid calling getBorderEdgeInfo
     // redundantly here.
     BorderEdge edges[4];
     style.GetBorderEdgeInfo(edges, include_logical_left_edge,
                             include_logical_right_edge);
 
     // Use the most conservative inset to avoid mixed-style corner issues.
     float fractional_inset = 1.0f / 2;
     for (auto& edge : edges) {
-      if (edge.BorderStyle() == kBorderStyleDouble) {
+      if (edge.BorderStyle() == EBorderStyle::kDouble) {
         fractional_inset = 1.0f / 6;
         break;
       }
     }
 
     FloatRectOutsets insets(-fractional_inset * edges[kBSTop].Width(),
                             -fractional_inset * edges[kBSRight].Width(),
                             -fractional_inset * edges[kBSBottom].Width(),
                             -fractional_inset * edges[kBSLeft].Width());
 
@@ skipping 541 matching lines @@
   if (PaintNinePieceImage(obj, info.context, rect, style, style.BorderImage()))
     return;
 
   const BoxBorderPainter border_painter(rect, style, bleed_avoidance,
                                         include_logical_left_edge,
                                         include_logical_right_edge);
   border_painter.PaintBorder(info, rect);
 }
 
 }  // namespace blink