Removal of offscreen display support (--offscreen)

[Christopher James Halse Rogers]

Seems sensible; should this become necessary again we're very nearly in 
a position to accommodate it as a no-core-changes-needed platform 
anyway.

On Wed, Jul 6, 2016 at 11:40 PM, Kevin DuBois 
<kevin.dubois at canonical.com> wrote:
> Sounds good to me, screencasting seems to have become the preferred 
> way that capturing output.
> --Kevin
> 
> On Wed, Jul 6, 2016 at 5:24 AM, Alexandros Frantzis 
> <alexandros.frantzis at canonical.com> wrote:
>> Hi all,
>> 
>> for a few years now, Mir has provided the --offscreen option to 
>> render
>> to offscreen buffers instead of the real outputs (note that it still
>> needs proper GPU/GLESv2 support, and it doesn't work in all
>> environments). This option was implemented experimentally in order to
>> help with automated QA scenarios, but it was never adopted, and we
>> didn't get any feedback or improvement requests.
>> 
>> Unless someone is currently using --offscreen, or has a valid use 
>> case
>> for it, I would like to remove it from our code base.
>> 
>> Thanks,
>> Alexandros
>> 
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>