[Merge] lp:~canonical-platform-qa/camera-app/fix_base_class into lp:camera-app

[Christopher Lee]

Looks good to me, although I will moan that there are changes here that aren't directly relevant to the base CPO class change (i.e. removal of unused imports).

The CI failed due to an infrastructure timeout, firing off again hopefully we have better luck this time around.
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https://code.launchpad.net/~canonical-platform-qa/camera-app/fix_base_class/+merge/257658
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~canonical-platform-qa/camera-app/fix_base_class into lp:camera-app.