Index: Source/core/css/StyleMedia.h |
diff --git a/Source/core/css/StyleMedia.h b/Source/core/css/StyleMedia.h |
index 0994f8d46209ea904540c89868df6a65d29d9ad0..ee69d1b430cdde1293e38fa01ecc3b101f942c32 100644 |
--- a/Source/core/css/StyleMedia.h |
+++ b/Source/core/css/StyleMedia.h |
@@ -44,7 +44,7 @@ public: |
AtomicString type() const; |
bool matchMedium(const String&) const; |
- void trace(Visitor*) { } |
+ virtual void trace(Visitor*) { } |
private: |
explicit StyleMedia(LocalFrame*); |