Revert "Merge pull request +4132 from c9/fix/desktop"
Revert "Merge pull request +4132 from c9/fix/desktop"

This reverts commit dbafdfd5925c770debd5553114ff3ba94f60b252, reversing
changes made to 9c580697976ea6a185d0d7b4f830aeba79ff2174.
c9/c9.ide.closeconfirmation