The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5ecf53fa428d5ec55ef8a4ab0fe5830a5015363e

commit 5ecf53fa428d5ec55ef8a4ab0fe5830a5015363e
Author: Mugdha Lakhani <nator@chromium.org>
Date: Tue Sep 18 13:41:55 2018

[Background Fetch] Remove dangling markup test

from the WPT suite.
This was added in response to an ongoing CL in the Fetch spec,
which nobody is championing at present and isn't part of the spec.

Here's the proposed spec change for reference:
https://github.com/whatwg/fetch/pull/519/commits

Bug: 884708
Change-Id: I185a876147ab7e02edd611840a237dce1cab750a
Reviewed-on: https://chromium-review.googlesource.com/1228060
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592023}
[delete] https://crrev.com/550fa9dcce07ebd09bf281b0389d07e840b01c09/third_party/WebKit/LayoutTests/external/wpt/background-fetch/dangling-markup.https.window.js