Makes initing Places services cheaper, by delaying the connection creation to the first time
it's actually needed.
Same way, delays reading the bookmark roots at the first time they are requested.
Deprecates the concept of lazy observers, since they are no more needed, we can just use addObserver.
Simplifies the startup path: always sends "places-init-complete" (both as a category and a topic) when
the connection starts and adds a "locked" database state when we can't get a working connection.
Makes PlacesCategoriesStarter register for the new category, since it's cheaper than being a bookmarks
observer.
Fixes a couple race conditions in keywords and expiration due to new startup timings.
Removes a test in test_keywords.js that is no more easily feasible, since it'd requires a pre-build
places.sqlite that should be kept up-to-date at every version.
MozReview-Commit-ID: 6ccPUZ651m0
Instead of opening and closing the favicons database at every startup to check whether
it's corrupt, just use the ATTACH DATABASE query result to achieve that.
Also avoid replacing places.sqlite in case of non-fatal errors during the connection
initialization.
MozReview-Commit-ID: 4VW3dtoSH07
The problem is due to sanitization happening too late in the shutdown cycle.
The Sanitizer depends on Places shutdown, that recently moved to async shutdown.
That change caused shutdown to happen completely at profile-before-change, unfortunately
during that phase it's impossible to predict which services are already shutdown.
The patch restores the previous Places shutdown procedure, thus clients are notified
earlier, during profile-change-teardown.
Additional meaningful changes:
* Fixes FX_SANITIZE_TOTAL telemetry to properly count total time taken by sanitize.
* Makes each cleanup operation isolated from other errors to try cleaning up as most as possible.
* In case of multiple sanitization sub steps, each step is isolated by a try/catch, the last seen exception is reported upstream.
* Makes FX_SANITIZE_HISTORY actually measure history, not other random stuff.
* Removes TOPIC_SIMULATE_PLACES_MUST_CLOSE_1 since we can now just use profile-change-teardown for shutdown phase 1.
MozReview-Commit-ID: HroLvbi25IC
