1 files changed, 5 insertions, 1 deletions
diff --git a/chromium/third_party/blink/renderer/core/css/media_query_evaluator.h b/chromium/third_party/blink/renderer/core/css/media_query_evaluator.h
index 570e0ff096b..2d9e016d8fe 100644
--- a/chromium/third_party/blink/renderer/core/css/media_query_evaluator.h
+++ b/chromium/third_party/blink/renderer/core/css/media_query_evaluator.h
@@ -94,7 +94,11 @@ class CORE_EXPORT MediaQueryEvaluator final
   // Evaluates media query subexpression, ie "and (media-feature: value)" part.
   bool Eval(const MediaQueryExp&) const;
 
-  void Trace(blink::Visitor*);
+  // Returns true if any of the expressions in the results lists changed its
+  // evaluation.
+  bool DidResultsChange(const MediaQueryResultList& results) const;
+
+  void Trace(Visitor*);
 
  private:
   const String MediaType() const;