Add [WillBeGarbageCollected] to Event.idl

Source/wtf/GetPtr.h

Index: Source/wtf/GetPtr.h
diff --git a/Source/wtf/GetPtr.h b/Source/wtf/GetPtr.h
index a0f7c62f8b891f34a8cd3542a273a6b6e0f13e83..dc431c76ac38862809c4cbbf9059ba0649d5679d 100644
--- a/Source/wtf/GetPtr.h
+++ b/Source/wtf/GetPtr.h
@@ -21,6 +21,8 @@
 #ifndef WTF_GetPtr_h
 #define WTF_GetPtr_h
 
+#include "wtf/RawPtr.h"
+
 namespace WTF {
 
     template <typename T> inline T* getPtr(T* p)
@@ -33,6 +35,11 @@ namespace WTF {
         return &p;
     }
 
+    template <typename T> inline T* getPtr(RawPtr<T> p)
+    {
+        return p.get();
+    }
+
 } // namespace WTF
 
 #endif // WTF_GetPtr_h