Oilpan: have Navigator and its supplements be on the heap by default.

Source/modules/netinfo/NavigatorNetworkInformation.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NavigatorNetworkInformation_h
 #define NavigatorNetworkInformation_h
 
 #include "core/frame/DOMWindowProperty.h"
 #include "platform/Supplementable.h"
 
 namespace blink {
 
 class Navigator;
 class NetworkInformation;
 
-class NavigatorNetworkInformation final
-    : public NoBaseWillBeGarbageCollected<NavigatorNetworkInformation>
-    , public WillBeHeapSupplement<Navigator>
-    , DOMWindowProperty {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorNetworkInformation);
-    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(NavigatorNetworkInformation);
+// TODO(Oilpan): when ~DOMWindowProperty is removed, derive from GarbageCollected<> instead.
+class NavigatorNetworkInformation final : public GarbageCollectedFinalized<NavigatorNetworkInformation>, public HeapSupplement<Navigator>, DOMWindowProperty {
+    USING_GARBAGE_COLLECTED_MIXIN(NavigatorNetworkInformation);
 public:
     static NavigatorNetworkInformation& from(Navigator&);
     static NavigatorNetworkInformation* toNavigatorNetworkInformation(Navigator&);
-    static const char* supplementName();
+
+    virtual ~NavigatorNetworkInformation();
 
     static NetworkInformation* connection(Navigator&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit NavigatorNetworkInformation(Navigator&);
     NetworkInformation* connection();
 
-    PersistentWillBeMember<NetworkInformation> m_connection;
+    static const char* supplementName();
+
+    Member<NetworkInformation> m_connection;
 };
 
 } // namespace blink
 
 #endif // NavigatorNetworkInformation_h