Make SelectionState enum class

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2385 matching lines @@
   // value of the previous in-flow object, even though we're not at a class A
   // break point.
   EBreakBetween break_value =
       IsFloatingOrOutOfFlowPositioned()
           ? previous_break_after_value
           : ClassABreakPointValue(previous_break_after_value);
   return IsForcedFragmentainerBreakValue(break_value);
 }
 
 bool LayoutBox::PaintedOutputOfObjectHasNoEffectRegardlessOfSize() const {
-  if (HasNonCompositedScrollbars() || GetSelectionState() != SelectionNone ||
+  if (HasNonCompositedScrollbars() ||
+      GetSelectionState() != SelectionState::kNone ||
       HasBoxDecorationBackground() || StyleRef().HasBoxDecorations() ||
       StyleRef().HasVisualOverflowingEffect())
     return false;
 
   // Both mask and clip-path generates drawing display items that depends on
   // the size of the box.
   if (HasMask() || HasClipPath())
     return false;
 
   // If the box has any kind of clip, we need issue paint invalidation to cover
@@ skipping 3475 matching lines @@
 void LayoutBox::MutableForPainting::
     SavePreviousContentBoxSizeAndLayoutOverflowRect() {
   auto& rare_data = GetLayoutBox().EnsureRareData();
   rare_data.has_previous_content_box_size_and_layout_overflow_rect_ = true;
   rare_data.previous_content_box_size_ = GetLayoutBox().ContentBoxRect().Size();
   rare_data.previous_layout_overflow_rect_ =
       GetLayoutBox().LayoutOverflowRect();
 }
 
 }  // namespace blink