9913015

Add a test exercising media loads where the service worker is rewriting the first request to a different origin
rdar://135538123
https://bugs.webkit.org/show_bug.cgi?id=279354

Reviewed by NOBODY (OOPS!).

This test is doing the following:
- Register a service worker.
- Create a media element and trigger a cross-origin media load from it.
- The media load starts by fetching the resource first bytes to check whether range requests are supported.
- The service worker intercepts the cross-origin media load and returns a valid synthetic response.
- The media load continues with either of the following:
  - the second fetch is reusing the synthetic response URL and is same origin. In that case, we return an error
  - the second goes to the server and is opaque, and so should fail as per HTML spec.

This test validates that the media load fails as per spec.

* LayoutTests/http/wpt/resources/test.mp4: Added.
* LayoutTests/http/wpt/service-workers/media-range-request-expected.txt: Added.
* LayoutTests/http/wpt/service-workers/media-range-request-worker.js: Added.
(self.onfetch.event.event.request.url.includes):
(self.onfetch.event.videoRequestCount.event.respondWith.new.Response.new.Uint8Array):
* LayoutTests/http/wpt/service-workers/media-range-request.html: Added.

9913015