Comment 1 for bug 1642504

Bisected. The problem started with:

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revno: 3823 [merge]
author: Christopher James Halse Rogers <email address hidden>
committer: Tarmac
branch nick: development-branch
timestamp: Tue 2016-11-15 23:48:01 +0000
message:
  Replace the mir::Server-overridable Reports with Observers.

  This resolves two problems:
  1) It ensures that Mir will respect the various reporting options we provide, even when the shell wants to hook into some of the reports, and
  2) It matches the semantic expectations around Reports vs Observers that (most of) the Mir team have. A couple of report call-sites which are unsafe for Observers are fixed in this branch.

  Approved by mir-ci-bot, Kevin DuBois, Andreas Pokorny, Cemil Azizoglu.
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