Oilpan: make DOMWindowProperty a GC mixin.

Source/modules/netinfo/NavigatorNetworkInformation.h

Index: Source/modules/netinfo/NavigatorNetworkInformation.h
diff --git a/Source/modules/netinfo/NavigatorNetworkInformation.h b/Source/modules/netinfo/NavigatorNetworkInformation.h
index 8a7a2b4fb7eae0cd2d6e26c455d2e4b019e97525..f543c63d77bcbd4f9c2b0829508c9e9705f7d9ca 100644
--- a/Source/modules/netinfo/NavigatorNetworkInformation.h
+++ b/Source/modules/netinfo/NavigatorNetworkInformation.h
@@ -14,13 +14,12 @@ class Navigator;
 class NetworkInformation;
 
 class NavigatorNetworkInformation FINAL
-    : public NoBaseWillBeGarbageCollectedFinalized<NavigatorNetworkInformation>
+    : public NoBaseWillBeGarbageCollected<NavigatorNetworkInformation>
     , public WillBeHeapSupplement<Navigator>
     , DOMWindowProperty {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorNetworkInformation);
-
+    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(NavigatorNetworkInformation);
 public:
-    virtual ~NavigatorNetworkInformation();
     static NavigatorNetworkInformation& from(Navigator&);
     static NavigatorNetworkInformation* toNavigatorNetworkInformation(Navigator&);
     static const char* supplementName();