Lessen App Update Displayed UI

Feature	Status	Dev Lead	QA Lead	Status
Lessen App Update Displayed UI	Landed in Firefox 8	Frank Yan	AndreiD	Complete

Summary

A notification that there is an update downloaded/ready to install and Firefox needs to be restarted to apply the update is displayed 24 hours after an update has been downloaded.
This changes the old notification time from 12 to 24 hours.
This feature is available starting Firefox 8.

Design and infrastructure:
- Bug 659425 - get average session length from crash stats and Test Pilot studies
- Bug 657472 - 'Tune' the time to wait before displaying the update been downloaded / restart notification and provide ability to override in the update xml

Steps to verify:
- Install a version of Firefox which requires updates
- Launch Firefox
- Go to Help/About Firefox
- After the new version is downloaded, simply close the About dialog and let Firefox opened without restarting
Expected result:
- 24 hours later a notification to restart Firefox in order to apply the update is displayed

Also, the notification should occur with no problem after 24 hours if:
- Multiple tabs are loaded
- Multiple windows of Firefox are opened
- Panorama is opened
- Heavy user profile is loaded (big history, multiple bookmarks, settings, tabs, add-ons)

A list of example cases that can help with testing this feature can be found here: Test_Cases_Examples

bug 659425 - get average session length from crash stats and Test Pilot studies
bug 657472 - 'Tune' the time to wait before displaying the update been downloaded / restart notification and provide ability to override in the update xml