[Merge] lp:~ahayzen/webbrowser-app/fix-1633040-add-js-dialog-ap-tests into lp:webbrowser-app/staging

[Olivier Tilloy]

In the test_before_unload_* functions, could you please check that the dialog is eventually destroyed (like in other tests)?

Other than that this looks great!
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https://code.launchpad.net/~ahayzen/webbrowser-app/fix-1633040-add-js-dialog-ap-tests/+merge/308392
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~ahayzen/webbrowser-app/fix-1633040-add-js-dialog-ap-tests into lp:webbrowser-app/staging.