commit 726375b6a0c5583f4d6c37a0d5edaf2421cb72b9
author Yao Xiao <yaoxia@chromium.org> Sat Jan 26 01:05:24 2019
committer Commit Bot <commit-bot@chromium.org> Sat Jan 26 01:05:24 2019
tree bd2f5487fe918374f3dbe14e3d5ffa8abecd4d2c
parent 987d27a582339adcc52ddb71ec95e303ea10a7e5

Add tentative WPT to verify download in sandbox

General testing idea:
For a network request, we store a token in stash. And after a fixed
period of time sufficient for the download to finish, if there are
any, we validate the token in the stash to see if the network request
was issued and finished successfully.

In the case of <a download> where the decision of download can be made
before resource fetching, the server sets the token immediately.

In the case of navigation to a download, the server will stream a
response over 1 seconds and set the token at the end only when the
socket has been connected. So it is able to detect any download
cancellation while fetching the resource.

Bug: 539938
Change-Id: I734c8cc18d1f761f16646c6b859a6b731ab40ff5
Reviewed-on: https://chromium-review.googlesource.com/c/1422667
Commit-Queue: Yao Xiao <yaoxia@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626289}