Adding factory constructors to all classes to suppress missing generative constructor warnings.
Adding a throw to Dartium's base DOM class to prevent construction of native objects.
This also includes the changes necessary to make all DOM types abstract, but I'm running into a dart2js issue which is preventing that.
BUG=
R=vsm@google.com
Review URL: https://codereview.chromium.org//17063007
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24241 260f80e4-7a28-3924-810f-c04153c831b5
Also removing references to EntityReference which is an outdated XML type.
Note that there's a bit of an oddity here around NodeFilter, which is both a class with all of the filter flags, and a function signature for a callback.
For now, I've scrubbed references to NodeFilter (the callback), but if desired I can add a new filter callback. This will most likely require a bit of Dartium work as well, so a separate CL I think.
BUG=
R=jmesserly@google.com
Review URL: https://codereview.chromium.org//13685021
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@22160 260f80e4-7a28-3924-810f-c04153c831b5
sra@google.com