Expand the observe package's barback constraint.

R=jmesserly@google.com
BUG=

Review URL: https://codereview.chromium.org//296453010

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/observe@36403 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 4d0ab50f31e30e0314a39bbe31a7efa87fff1a67
  1. lib/
  2. test/
  3. AUTHORS
  4. CHANGELOG.md
  5. LICENSE
  6. PATENTS
  7. pubspec.yaml