webkit_web_view_get_settings clashes with gtk_widget_get_settings. This is not necessarily a problem in the C interface, however it might be confusing and more importantly in bindings that map something like foo.getSettings or foo.get_settings. I suggest to rename the accessor and property to actually refer to web_settings instead of settings.
Carlos, here's another bindings issue that we should figure out how to fix for WebKit.
webkit_web_view_get_web_settings() makes sense in WebKit1 where settings object is WebKitWebSettings, but in WebKit2 is WebKitSettings. Don't have bindings a way to deal with this?