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

third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h

Index: third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h b/third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h
index 2c94926c6f15f5d14b83ebef27995c1fb7f94a1b..2833f6af85c291c2c190824ba701fbe7e379d945 100644
--- a/third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h
+++ b/third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.h
@@ -20,7 +20,9 @@ class CORE_EXPORT CSSUnsupportedStyleValue final : public CSSStyleValue {
     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_; }