Implement PotentialCustomElementName

third_party/WebKit/Source/platform/text/CharacterProperty.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cstdint>
 
 namespace blink {
 
 using CharacterPropertyType = uint8_t;
 
 enum class CharacterProperty : CharacterPropertyType {
     isCJKIdeographOrSymbol = 0x0001,
     isUprightInMixedVertical = 0x0002,
+    isPotentialCustomElementNameChar = 0x0004,
 };
 
 inline CharacterProperty operator | (
     CharacterProperty a, CharacterProperty b)
 {
     return static_cast<CharacterProperty>(
         static_cast<CharacterPropertyType>(a)
         | static_cast<CharacterPropertyType>(b));
 }
 
 inline CharacterProperty operator & (
     CharacterProperty a, CharacterProperty b)
 {
     return static_cast<CharacterProperty>(
         static_cast<CharacterPropertyType>(a)
         & static_cast<CharacterPropertyType>(b));
 }
 
 inline CharacterProperty operator |= (
     CharacterProperty& a, CharacterProperty b)
 {
     a = a | b;
     return a;
 }
 
 } // namespace blink