Clean up tests that are duplicated between install and update.

R=nweiz@google.com

Review URL: https://codereview.chromium.org//15701006

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@23160 260f80e4-7a28-3924-810f-c04153c831b5
22 files changed