The change to AbstractRequestContext is almost entirely code-moves. Several private methods were made package-protected and makePayload() was split into smaller methods.
In order to exercise the ProxySerializer as much as possible, all return values in RequestFactoryTest are serialized locally and then a new instance is reconstructed from the saved data. http://gwt-code-reviews.appspot.com/1148801/show -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
