Reapply utf85_test.

Bug in VM has been fixed. It shouldn't take that long anymore.

This test was originally LGTMed in https://chromiumcodereview.appspot.com/25463003/

R=fschneider@google.com

Review URL: https://codereview.chromium.org//25539006

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28198 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed