Merge mozilla-mobile#5053

5053: Closes mozilla-mobile#2229: Encrypted-at-rest FxA state storage support r=csadilek a=grigoryk

This patch adds a version of `AccountStorage` which is backed by an encrypted-at-rest shared-prefs implementation,
`SecureAbove22Preferences`. As the name suggests, encryption at rest is enabled only for Android API levels 23+.
Otherwise, plaintext storage is used. `SecureAbove22Preferences` will handle API level upgrades behind the scenes,
if necessary.

In order to support rolling this out, `SecureAbove22AccountStorage` automatically migrates account state if it was
present in `SharedPrefAccountStorage`. And vice-versa, `SharedPrefAccountStorage` will automatically migrate account
state if it was present in `SecureAbove22AccountStorage`. This allows applications to easily switch between two
implementations, without any ill-effects.

In order to monitor storage implementations for abnormalities (such as disappearing encryption keys), an optional
`CrashReporter` instance may be configured now via FxaAccountManager.

`DeviceConfig` gained a `secureStateAtRest` flag, which allows applications to specify if they'd like to encrypt
account state. This config object isn't a perfect fit for this flag, but it's close enough conceptually.




Co-authored-by: Grisha Kruglov <[email protected]>

Bug 1595808 - Bump taskgraph to the latest revision

Bug 1595808 - Bump taskgraph to the latest revision

Merge mozilla-mobile#4959

4959: Experiments: Make version comparisons more tolerant of invalid versions r=ekager a=mythmon

Fixes mozilla-mobile#4957




Co-authored-by: Mike Cooper <[email protected]>

Set version to 19.0.1.

Merge mozilla-mobile#4860

4860: For issue mozilla-mobile#4839: update tracking protection policies. r=csadilek a=Amejia481



Co-authored-by: Arturo Mejia <[email protected]>

Merge mozilla-mobile#4693

4693: Fennec data migration scaffolding r=pocmo a=grigoryk

This is going to be a rolling PR for a little bit, until this is ready to land.
Companion Fenix PR: mozilla-mobile/fenix#5878

Workflow for testing it:
- fetch an ESR68 build from TC: https://tools.taskcluster.net/index/gecko.v2.mozilla-esr68.signed-nightly.nightly.latest.mobile
- re-sign it using a local debug keystore:
  - `zip -d target.apk "META-INF/*"`
  - `~/Code/mozilla-central/mobile/android/debug_sign_tool.py target.apk`
- enable auto-publication workflow for a-c in fenix
- assemble fennecProduction version of Fenix (built against this branch, see auto-publication)
  - `./gradlew assembleFennecProduction`
- sign it using keys used to sign fennec esr apk (otherwise we won't be able to overwrite one with another):
  - `~/Code/mozilla-central/mobile/android/debug_sign_tool.py app/build/outputs/apk/geckoBeta/fennecProduction/app-geckoBeta-x86-fennecProduction-unsigned.apk`
- install fennec esr apk build
- generate some profile data for migration (sign-into fxa, browse around, etc..)
- install fenix build: `adb install -r app/build/outputs/apk/geckoBeta/fennecProduction/app-geckoBeta-x86-fennecProduction-unsigned.apk`

TODO:
- currently needs mozilla/application-services#1942 to work
- add separate migration versioning for history and bookmarks; currently the whole thing is versioned
- add migration tests
  - in fennec, we have a bunch of "schema migration" tests that operate over older versions of browser.db
  - this is a good approach here as well - we can run migration code in tests against a few test db files, that exercise various history/bookmarks configurations and try multiple schema versions
- improve the workflow around this, it's quite tedious currently

Co-authored-by: Grisha Kruglov <[email protected]>

Merge mozilla-mobile#4722

4722: 1587405: Allow recording the empty string list r=mdboom a=mdboom



Co-authored-by: Michael Droettboom <[email protected]>

Import l10n.

Merge mozilla-mobile#4541

4541: Bug 1583870 - Start converting a-c to taskgraph r=pocmo a=JohanLorenzo



Co-authored-by: Johan Lorenzo <[email protected]>