make dartdoc and editor happy

added type to Logger.level setter
added type to Logger.root

Review URL: https://codereview.chromium.org//12316126
Patch from Kevin Moore <kevmoo@j832.com>.

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/logging@19186 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 477b2e8b35f4e05fd0fb9cf63164e1bff2a2671d
  1. lib/
  2. test/
  3. pubspec.yaml