Apps should be able to access their session logs in order to troubleshoot problems encountered when app is running (and include them in their bug/feedback reports). In order to accomplish this, they should be given permission to use an API for retrieving device logs.
Said API already exists (chrome.logPrivate), but is currently available only to set of whitelisted apps - API access should be expanded to apps running in kiosk session.

Few things that should be ensured when opening chrome.logPrivate:
* PII should be scrubbed from retrieved logs
* kiosk app logs should be retrievable by the app
* logs from regular session should preferably not be retrievable by the app

We would probably want to restrict this API to auto-launched kiosk sessions.