Some classes with virtual methods are missing virtual destructors
Created attachment 233115 [details]
Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See http://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API
Comment on attachment 233115 [details]
I don't think this warning is useful. Nobody deletes a TextureMapperPlatformLayer::Client for example, so this just creates extra vtable entries for no good reason.
-Wdelete-non-virtual-dtor only warns about cases where such classes are actually deleted.
There are no such warnings occurring with the current code, so there's nothing to do here.