Increase the timeout for a failing pub test.

TBR
R=rnystrom@google.com

Review URL: https://codereview.chromium.org//149063005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@32096 260f80e4-7a28-3924-810f-c04153c831b5
2 files changed