Bug 1658869 - Propagate the InterceptedHttpChannel information to fetch's...

Bug 1658869 - Propagate the InterceptedHttpChannel information to fetch's channel casued by FetchEvent.request. r=dom-worker-reviewers,dragana,jesup, a=dmeehan


When a network load needs to be intercepted by ServiceWorker, we extract the Request from the InterceptedHttpChannel, and propagate the Request through FetchEvent.request.

However, some needed information is not extracted or is modified during the Request propagation, so getting the wrong result when using the Request to fetch resources in the ServiceWorker script.

Differential Revision: https://phabricator.services.mozilla.com/D145969