[tor-bugs] #31396 [Applications/Tor Browser]: Communication with noscript for security settings not working in nightlies

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#31396: Communication with noscript for security settings not working in nightlies
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 Reporter:  acat                                 |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff68-esr, TorBrowserTeam201908,      |  Actual Points:
  tbb-9.0-must-alpha                             |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor44-can
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Comment (by acat):

 >In-memory IndexedDB is not ready. In-PBM too. Of course,
 extensions.webextensions.ExtensionStorageIDB.enabled for now.
 I don't think in-memory indexeddb will be used in webextensions, it will
 always persist.

 >Sounds like we should go with the other option for now. What are the
 drawbacks for that one?
 AFAIK the old implementation is synchronous and writes the whole key-value
 store to disk every time there is some change. But for reasonable usage of
 the storage (which noscript and https everywhere probably has) this should
 not be a problem.

 There is some migration code that is ran when
 `extensions.webextensions.ExtensionStorageIDB.enabled` which might be
 removed in the future, but I think that should not be an issue at least
 until next ESR.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31396#comment:6>
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