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

Source/modules/permissions/NavigatorPermissions.h

Index: Source/modules/permissions/NavigatorPermissions.h
diff --git a/Source/modules/permissions/NavigatorPermissions.h b/Source/modules/permissions/NavigatorPermissions.h
index 062ea0a5f61d26c36b221d46b67c181264f1ecf9..33e631be253512ee18b99807470430a25b6cfb4e 100644
--- a/Source/modules/permissions/NavigatorPermissions.h
+++ b/Source/modules/permissions/NavigatorPermissions.h
@@ -13,24 +13,20 @@ namespace blink {
 class Navigator;
 class Permissions;
 
-class NavigatorPermissions final
-    : public NoBaseWillBeGarbageCollectedFinalized<NavigatorPermissions>
-    , public WillBeHeapSupplement<Navigator> {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NavigatorPermissions);
+class NavigatorPermissions final : public GarbageCollected<NavigatorPermissions>, public HeapSupplement<Navigator> {
+    USING_GARBAGE_COLLECTED_MIXIN(NavigatorPermissions);
 public:
-    virtual ~NavigatorPermissions();
-
     static NavigatorPermissions& from(Navigator&);
     static Permissions* permissions(Navigator&);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    static const char* supplementName();
-
     NavigatorPermissions();
 
-    PersistentWillBeMember<Permissions> m_permissions;
+    static const char* supplementName();
+
+    Member<Permissions> m_permissions;
 };
 
 } // namespace blink