I am suggesting the removal of navigator.registerContentHandler <https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerContentHandler> API used to register a web page to handle content types.
Firefox has an implementation that only can be used to allow a web page to handle RSS feeds. We don't have telemetry on this feature however we do know that registerProtocolHandler has around 0.2% usage and this feature is implemented in multiple browsers and isn't specific to Firefox. Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1398169 There is a small risk of breakage that we could decide to delay and instead implement telemetry. However if the site is feature testing rather than user agent testing there shouldn't be an issue here. As this API throws errors there is likelihood websites account for it throwing anyway. I would prefer however to let the removal ride the trains due to it's low risk before 61 so our ESR doesn't have it. Alternatively we could restrict this API to Secure Context only due to the risk of passing web content to an insecure context. This would be aligned with our overall plan regarding HTTP APIs. Removal of this feature requires the removal of some internal tests and to stop ignoring a web platform test. The rationale: - This API had bugs filed on it's implementation - Is only implemented by Firefox - The API is now non standard - No other browsers have intent to implement Thanks Jonathan _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
