[tbb-bugs] #27065 [Applications/Tor Browser]: TBA: Delete AccountManager usage from Tabs

[Tor Bug Tracker & Wiki]

#27065: TBA: Delete AccountManager usage from Tabs
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     Reporter:  sysrqb                    |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:  tbb-mobile
Actual Points:                            |  Parent ID:  #26858
       Points:                            |   Reviewer:
      Sponsor:                            |
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 When the app is started/restarted, it creates an
 `OnAccountsUpdatedListener` using the Android `AccountManager` in
 `Tabs.attachToContext()`. When a new account is added, the Listener calls
 `queuePersistAllTabs()` where the current tabs are cached in the local
 database on disk. We should avoid all of this. We already deleted most of
 the FxA and Sync related code, we can probably delete this, too.

 {{{
         mAccountManager = AccountManager.get(appContext);

         mAccountListener = new OnAccountsUpdateListener() {
             @Override
             public void onAccountsUpdated(Account[] accounts) {
                 queuePersistAllTabs();
             }
         };

         // The listener will run on the background thread (see 2nd
 argument).
         mAccountManager.addOnAccountsUpdatedListener(mAccountListener,
 ThreadUtils.getBackgroundHandler(), false);
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27065>
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