Make EFlexWrap 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 752 matching lines @@
   static float InitialFlexShrink() { return 1; }
   float FlexShrink() const {
     return rare_non_inherited_data_->flexible_box_data_->flex_shrink_;
   }
   void SetFlexShrink(float f) {
     SET_NESTED_VAR(rare_non_inherited_data_, flexible_box_data_, flex_shrink_,
                    f);
   }
 
   // flex-wrap (aka -webkit-flex-wrap)
-  static EFlexWrap InitialFlexWrap() { return kFlexNoWrap; }
+  static EFlexWrap InitialFlexWrap() { return EFlexWrap::kNowrap; }
   EFlexWrap FlexWrap() const {
     return static_cast<EFlexWrap>(
         rare_non_inherited_data_->flexible_box_data_->flex_wrap_);
   }
   void SetFlexWrap(EFlexWrap w) {
-    SET_NESTED_VAR(rare_non_inherited_data_, flexible_box_data_, flex_wrap_, w);
+    SET_NESTED_VAR(rare_non_inherited_data_, flexible_box_data_, flex_wrap_,
+                   static_cast<unsigned>(w));
   }
 
   // -webkit-box-ordinal-group
   static unsigned InitialBoxOrdinalGroup() { return 1; }
   unsigned BoxOrdinalGroup() const {
     return rare_non_inherited_data_->deprecated_flexible_box_data_
         ->box_ordinal_group_;
   }
   void SetBoxOrdinalGroup(unsigned og) {
     SET_NESTED_VAR(rare_non_inherited_data_, deprecated_flexible_box_data_,
@@ skipping 2347 matching lines @@
       PseudoBitsInternal() | 1 << (pseudo - kFirstPublicPseudoId)));
 }
 
 inline bool ComputedStyle::HasPseudoElementStyle() const {
   return PseudoBitsInternal() & kElementPseudoIdMask;
 }
 
 }  // namespace blink
 
 #endif  // ComputedStyle_h