Revert "Mark test failing due to dartbug.com/21523"

Fixing a type-warning also fixed this problem.

Review URL: https://codereview.chromium.org//709443003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41552 260f80e4-7a28-3924-810f-c04153c831b5
Fix hanging test script batch runners.

BUG=
R=ricow@google.com

Review URL: https://codereview.chromium.org//707733003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41553 260f80e4-7a28-3924-810f-c04153c831b5
Fix import in compile_loop.dart.

BUG=
R=ahe@google.com

Review URL: https://codereview.chromium.org//700163002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41554 260f80e4-7a28-3924-810f-c04153c831b5
Drop trailing null arguments in generated JS.

BUG=
R=floitsch@google.com

Review URL: https://codereview.chromium.org//575013002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41555 260f80e4-7a28-3924-810f-c04153c831b5
Avoid resetting collectors when calling finnishClasses from deferred.

I would love to add a test to this cl, but have not been
able to reduce the example given in the bug report.

BUG= dartbug.com/21382
R=floitsch@google.com

Review URL: https://codereview.chromium.org//705023003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41556 260f80e4-7a28-3924-810f-c04153c831b5