Match enums, class type alias, type parameters.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//745513003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41878 260f80e4-7a28-3924-810f-c04153c831b5
Restore (and deprecate) ForEachStatement.iterator getter.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//744693004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41879 260f80e4-7a28-3924-810f-c04153c831b5