[Merge] lp:~gerboland/qtubuntu/make-up-physical-size-if-mir-says-0x0 into lp:qtubuntu

[Gerry Boland]

I'm not convinced this is useful, marking WiP
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https://code.launchpad.net/~gerboland/qtubuntu/make-up-physical-size-if-mir-says-0x0/+merge/302578
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