1863034 - Check MOZ_WEBEXT_WEBIDL_ENABLED in WebExtensionPolicy.backgroundServiceWorkerEnabled

Status: RESOLVED FIXED

(WebExtensions :: General, task, P2)

Description

[Rob Wu [:robwu]]

The extension's background service worker is non-functional (as in having no extension APIs) when the application is compiled without MOZ_WEBEXT_WEBIDL_ENABLED.

The only limited use of the background service worker without extension APIs is for extensions whose only purpose is to call non-extension APIs (e.g. sending a network request). This is quite limited, so it could make sense to always return false from WebExtensionPolicy.backgroundServiceWorkerEnabled when MOZ_WEBEXT_WEBIDL_ENABLED is off. By doing so, the extensions.backgroundServiceWorker.enabled pref would effectively be ignored on non-Nightly builds.

This came up during the review of the patch to bug 1775618 at https://phabricator.services.mozilla.com/D192081#6365025

Comment 1

[Rob Wu [:robwu]]

Attachment: Bug 1863034 - Lock backgroundServiceWorkerEnabled to false on non-Nightly

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8e569acf3aaa
Lock backgroundServiceWorkerEnabled to false on non-Nightly r=rpl

Comment 3

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/8e569acf3aaa