Make SelectionState enum class

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  *               (http://www.torchmobile.com/)
@@ skipping 2574 matching lines @@
 }
 
 inline LayoutObject* LayoutObject::ParentCrossingFrames() const {
   if (IsLayoutView())
     return GetFrame()->OwnerLayoutObject();
   return Parent();
 }
 
 bool LayoutObject::IsSelectionBorder() const {
   SelectionState st = GetSelectionState();
-  return st == SelectionStart || st == SelectionEnd || st == SelectionBoth;
+  return st == SelectionState::kStart || st == SelectionState::kEnd ||
+         st == SelectionState::kStartAndEnd;
 }
 
 inline void LayoutObject::ClearLayoutRootIfNeeded() const {
   if (LocalFrameView* view = GetFrameView()) {
     if (!DocumentBeingDestroyed())
       view->ClearLayoutSubtreeRoot(*this);
   }
 }
 
 void LayoutObject::WillBeDestroyed() {
@@ skipping 996 matching lines @@
   if (!block->HasSelectedChildren())
     return;
 
   // ::selection style only applies to direct selection leaf children of the
   // element on which the ::selection style is set. Thus, we only walk the
   // direct children here.
   for (LayoutObject* child = SlowFirstChild(); child;
        child = child->NextSibling()) {
     if (!child->CanBeSelectionLeaf())
       continue;
-    if (child->GetSelectionState() == SelectionNone)
+    if (child->GetSelectionState() == SelectionState::kNone)
       continue;
     child->SetShouldInvalidateSelection();
   }
 }
 
 }  // namespace blink
 
 #ifndef NDEBUG
 
 void showTree(const blink::LayoutObject* object) {
@@ skipping 20 matching lines @@
     const blink::LayoutObject* root = object1;
     while (root->Parent())
       root = root->Parent();
     root->ShowLayoutTreeAndMark(object1, "*", object2, "-", 0);
   } else {
     WTFLogAlways("%s", "Cannot showLayoutTree. Root is (nil)");
   }
 }
 
 #endif