[tor-bugs] #17248 [Tor Browser]: Investigate new WebExtensions API requirements for our extensions

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#17248: Investigate new WebExtensions API requirements for our extensions
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 Reporter:  gk                    |          Owner:  tbb-team
     Type:  task                  |         Status:  new
 Priority:  High                  |      Milestone:
Component:  Tor Browser           |        Version:
 Severity:  Normal                |     Resolution:
 Keywords:  TorBrowserTeam201511  |  Actual Points:
Parent ID:                        |         Points:
  Sponsor:                        |
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Comment (by brade):

 '''Requirements for which Web Extension APIs have been implemented in
 Firefox (D#, aka Done#):'''

 D1: Asynchronous communication between code modules
 Current Solution: nsIObserverService/nsIObserver
 New Solution: chrome.runtime.sendMessage(), chrome.runtime.onMessage()

 D2: Get current UI locale (used for language prompt)
 Current Solution: nsIXULChromeRegistry.getSelectedLocale("global")
 New Solution: Retrieve predefined @@ui_locale message using i18n API,
 e.g., let locale = chrome.i18n.getMessage("@@ui_locale"); or use let
 language = chrome.i18n.getUILanguage(); (the latter is not yet supported
 in Firefox)

 D3: Retrieve a localized string
 Current Solution:
 nsIStringBundle.GetStringFromName()/formatStringFromName()
 New Solution: chrome.i18n.getMessage()

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17248#comment:4>
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