Restructure type tracking in StyleValues to work better with new numeric types

third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.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.
 
 #ifndef CSSUnsupportedStyleValue_h
 #define CSSUnsupportedStyleValue_h
 
 #include "core/css/cssom/CSSStyleValue.h"
 
 namespace blink {
 
 // CSSUnsupportedStyleValue is the internal representation of a base
 // CSSStyleValue that is returned when we do not yet support a CSS Typed OM type
 // for a given CSS Value.
 class CORE_EXPORT CSSUnsupportedStyleValue final : public CSSStyleValue {
   WTF_MAKE_NONCOPYABLE(CSSUnsupportedStyleValue);
 
  public:
   static CSSUnsupportedStyleValue* Create(const String& css_text) {
     return new CSSUnsupportedStyleValue(css_text);
   }
 
-  StyleValueType GetType() const override { return StyleValueType::kUnknown; }
+  StyleValueType GetType() const override {
+    return StyleValueType::kUnknownType;
+  }
   const CSSValue* ToCSSValue() const override;
   const CSSValue* ToCSSValueWithProperty(CSSPropertyID) const override;
   String toString() const override { return css_text_; }
 
  private:
   CSSUnsupportedStyleValue(const String& css_text) : css_text_(css_text) {}
 
   String css_text_;
 };
 
 }  // namespace blink
 
 #endif  // CSSUnsupportedStyleValue_h