Make reflectClass(dynamic) throw an illegal argument exception.

Make reflectClass(dynamic) throw an illegal argument exception.

BUG=
R=gbracha@google.com, iposva@google.com

Committed: https://code.google.com/p/dart/source/detail?r=26550

[rmacnak, 2013-08-09 22:45:59]

This may break some users, and without http://dartbug.com/12246 I don't see
they'd work around it.

[rmacnak, 2013-08-16 17:50:45]

With http://dartbug.com/12246 fixed, one could write

reflectType(t){
  if(t==dynamic) return currentMirrorSystem().dynamicType();
  return reflectClass(t);
}


Also, dart2js does not yet treat dynamic as denoting a Type, so anyone using
dart2js isn't relying on reflectClass(dynamic) returning a (bogus) class mirror.

[gbracha, 2013-08-21 17:38:27]

Dart files lgtm.

[rmacnak, 2013-08-22 17:55:28]

Ping.

Folks are hitting this
(https://plus.google.com/100009996133924065020/posts/asjUHiwiu72).

[Ivan Posva, 2013-08-22 17:58:01]

LGTM -ip

[rmacnak, 2013-08-22 20:05:57]

Committed patchset #6 manually as r26550 (presubmit successful).