1 files changed, 9 insertions, 1 deletions
diff --git a/chromium/third_party/blink/renderer/core/animation/css_default_interpolation_type.h b/chromium/third_party/blink/renderer/core/animation/css_default_interpolation_type.h
index 941b2cae903..501fc9c4f09 100644
--- a/chromium/third_party/blink/renderer/core/animation/css_default_interpolation_type.h
+++ b/chromium/third_party/blink/renderer/core/animation/css_default_interpolation_type.h
@@ -30,7 +30,15 @@ class CORE_EXPORT CSSDefaultNonInterpolableValue : public NonInterpolableValue {
   Persistent<const CSSValue> css_value_;
 };
 
-DEFINE_NON_INTERPOLABLE_VALUE_TYPE_CASTS(CSSDefaultNonInterpolableValue);
+template <>
+struct DowncastTraits<CSSDefaultNonInterpolableValue> {
+  static bool AllowFrom(const NonInterpolableValue* value) {
+    return value && AllowFrom(*value);
+  }
+  static bool AllowFrom(const NonInterpolableValue& value) {
+    return value.GetType() == CSSDefaultNonInterpolableValue::static_type_;
+  }
+};
 
 // Never supports pairwise conversion while always supporting single conversion.
 // A catch all default for CSSValue interpolation.