Index: Source/core/css/MediaQueryList.h |
diff --git a/Source/core/css/MediaQueryList.h b/Source/core/css/MediaQueryList.h |
index fd00e845f92ddbf4e5e0015986abcf74db70a2c3..71e2c463c40b6dc67b9d6b871022b88028b4e4fd 100644 |
--- a/Source/core/css/MediaQueryList.h |
+++ b/Source/core/css/MediaQueryList.h |
@@ -53,7 +53,7 @@ public: |
void mediaFeaturesChanged(WillBeHeapVector<RefPtrWillBeMember<MediaQueryListListener> >* listenersToNotify); |
- void trace(Visitor*); |
+ virtual void trace(Visitor*); |
// From ActiveDOMObject |
virtual bool hasPendingActivity() const OVERRIDE; |