Make ETextModify an enum class.

third_party/WebKit/Source/core/style/ComputedStyle.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1978 matching lines @@
   // -webkit-user-drag
   static EUserDrag InitialUserDrag() { return DRAG_AUTO; }
   EUserDrag UserDrag() const {
     return static_cast<EUserDrag>(rare_non_inherited_data_->user_drag);
   }
   void SetUserDrag(EUserDrag d) {
     SET_VAR(rare_non_inherited_data_, user_drag, d);
   }
 
   // -webkit-user-modify
-  static EUserModify InitialUserModify() { return READ_ONLY; }
+  static EUserModify InitialUserModify() { return EUserModify::kReadOnly; }
   EUserModify UserModify() const {
     return static_cast<EUserModify>(rare_inherited_data_->user_modify_);
   }
   void SetUserModify(EUserModify u) {
-    SET_VAR(rare_inherited_data_, user_modify_, u);
+    SET_VAR(rare_inherited_data_, user_modify_, static_cast<unsigned>(u));
   }
 
   // -webkit-user-select
   static EUserSelect InitialUserSelect() { return SELECT_TEXT; }
   EUserSelect UserSelect() const {
     return static_cast<EUserSelect>(rare_inherited_data_->user_select_);
   }
   void SetUserSelect(EUserSelect s) {
     SET_VAR(rare_inherited_data_, user_select_, s);
   }
@@ skipping 1806 matching lines @@
       PseudoBitsInternal() | 1 << (pseudo - kFirstPublicPseudoId)));
 }
 
 inline bool ComputedStyle::HasPseudoElementStyle() const {
   return PseudoBitsInternal() & kElementPseudoIdMask;
 }
 
 }  // namespace blink
 
 #endif  // ComputedStyle_h