Index: Source/core/frame/FrameOwner.h |
diff --git a/Source/core/frame/FrameOwner.h b/Source/core/frame/FrameOwner.h |
index 1f19f7d515746772c07f8d1af80468ee1aaa019c..f87a53dc25d0b7f6aa6a6936f85dcc94c848e7bf 100644 |
--- a/Source/core/frame/FrameOwner.h |
+++ b/Source/core/frame/FrameOwner.h |
@@ -6,12 +6,14 @@ |
#define FrameOwner_h |
#include "core/dom/SandboxFlags.h" |
+#include "platform/heap/Handle.h" |
namespace blink { |
-class FrameOwner { |
+class FrameOwner : public WillBeGarbageCollectedMixin { |
public: |
virtual ~FrameOwner() { } |
+ virtual void trace(Visitor*) { } |
virtual bool isLocal() const = 0; |