Comment 1 for bug 1663130

Bisected. The regression started in:

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revno: 3941 [merge]
author: Kevin DuBois <email address hidden>
committer: Tarmac
branch nick: development-branch
timestamp: Mon 2017-01-16 14:04:32 +0000
message:
  server: remove mg::BufferProperties in some interfaces. mg::BufferProperties is problematic because it contains mg::BufferUsage, an outdated concept now that we have platform-specific extensions.
  .

  Approved by mir-ci-bot, Alan Griffiths, Cemil Azizoglu.
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