Make SelectionState enum class

third_party/WebKit/Source/core/layout/line/InlineFlowBox.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 1419 matching lines @@
 
 InlineBox* InlineFlowBox::LastLeafChild() const {
   InlineBox* leaf = nullptr;
   for (InlineBox* child = LastChild(); child && !leaf;
        child = child->PrevOnLine())
     leaf = child->IsLeaf() ? child : ToInlineFlowBox(child)->LastLeafChild();
   return leaf;
 }
 
 SelectionState InlineFlowBox::GetSelectionState() const {
-  return SelectionNone;
+  return SelectionState::kNone;
 }
 
 bool InlineFlowBox::CanAccommodateEllipsis(bool ltr,
                                            LayoutUnit block_edge,
                                            LayoutUnit ellipsis_width) const {
   for (InlineBox* box = FirstChild(); box; box = box->NextOnLine()) {
     if (!box->CanAccommodateEllipsis(ltr, block_edge, ellipsis_width))
       return false;
   }
   return true;
@@ skipping 256 matching lines @@
   InlineBox::ShowLineTreeAndMark(marked_box1, marked_label1, marked_box2,
                                  marked_label2, obj, depth);
   for (const InlineBox* box = FirstChild(); box; box = box->NextOnLine())
     box->ShowLineTreeAndMark(marked_box1, marked_label1, marked_box2,
                              marked_label2, obj, depth + 1);
 }
 
 #endif
 
 }  // namespace blink