Code review comment for lp:~dandrader/qtmir/appRestart-lp1527737

QA found a problem with this and I can confirm on devel-proposed/mako.

Trying to follow steps from Victor [1] I got into a state where unity8 rejects the camera app:

qtmir.applications: ApplicationManager::onProcessStarting(appId="com.ubuntu.camera_camera") - User wants to start a new instance of an application that is still closing and is already queued to start later.
qtmir.mir: SessionAuthorizer::connection_is_allowed - this= SessionAuthorizer(0xb16defe4) pid= 22192
qtmir.applications: ApplicationManager::authorizeSession - pid= 22192
ApplicationManager REJECTED connection from app with pid 22192 as it was not launched by upstart, and no desktop_file_hint is specified
qtmir.applications: ApplicationManager::onProcessFailed - appId= "com.ubuntu.camera_camera"
qtmir.applications: ApplicationManager::onProcessStopped - appId= "com.ubuntu.camera_camera"

Victor can confirm the same happened to him with camera and settings apps.

[1] https://trello.com/c/nAccJ8Qd/2639-854-ubuntu-landing-030-gsettings-qt-unity8-qtmir-qtubuntu-saviq