During tranpilation, arrow function inside Promise loses outbound scope
which results in incorrect __url initialization.
Unminified version worked fine (validated using proxy).
No test for this one since to cover this case the app should be minified
to reproduce the issue, otherwise the test will always pass.
Bug: Issue 7685
Change-Id: Ia1b171f08068a50dc29ce99342526bf64efdc01b