This CL fixes an issue where map branches would hang when trying to
retrieve a deleted issue due to a long timeout. This has been fixed by
reducing the timeout.

This CL also fixes a small issue where {NO_UPSTREAM} would show the
current branch's codereview URL.

BUG=470765

Review-Url: https://codereview.chromium.org/1847693004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300369 0039d316-1c4b-4281-b951-d872f2087c98