Consider letting extensions receive push messages through the WebPush API without receiving notifications. Instead of creating a new web extensions API, we could utilize WebPush to allow extensions to receive messages if we remove the requirement to display a notification on receiving a push message. This is something developers expressed a lot of interest in the Web Extensions Community Group (WECG). In order to do this, extensions would need to be able to set { userVisibleOnly: false }. Things to consider for Safari: - How would we push messages to an extension whose url changes on new launches of Safari? - It's currently HTTPS only in WebKit, and we would need figure out a way this could work with web extension URLs Link WECG issue: https://github.com/w3c/webextensions/issues/208
<rdar://problem/115119386>