Update dart:collection to version 1.0.0
Update dart:collection to version 1.0.0

R=sgjesse@google.com

Review URL: https://codereview.chromium.org//463333004

git-svn-id: da6bca2648e04c17f8345558aaf5a164717834e9@39484 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/http_parser