Keep full test_ method names in reflective tests.

If found that when a test fails, need to copy its name, open outline,
don't forget to type * (i.e. Shift+8) and then paste the name.

It would be easier to have full names ready to copy.

R=brianwilkerson@google.com, paulberry@google.com
BUG=

Review URL: https://codereview.chromium.org//749083005

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@42067 260f80e4-7a28-3924-810f-c04153c831b5