Make _TestOptionSpecification take a named argument.
Make _TestOptionSpecification take a named argument.

I want to refactor test_options.dart so that variable expansions, such as, "all" -> "debug,release" are generalized. So I want to add another named argument to _TestOptionSpecification in the next CL.

R=whesse@google.com

Review URL: https://codereview.chromium.org//185463004

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@33207 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk