Bug 1773746 [wpt PR 34376] - Reland "[FedCM] Make revoke test do actual network reque...

Bug 1773746 [wpt PR 34376] - Reland "[FedCM] Make revoke test do actual network requests", a=testonly

Automatic update from web-platform-tests
Reland "[FedCM] Make revoke test do actual network requests"

This reverts commit f5b6833a709e056c8cdf9555937207e24fb1efa4.

Reason for revert: Should work now that https://crrev.com/c/3696516 landed

Original change's description:
> Revert "[FedCM] Make revoke test do actual network requests"
>
> This reverts commit 6a575ea5afec3e47b3975f082cde49acf1c89063.
>
> Reason for revert: This CL might cause test external/wpt/credential-management/fedcm-revoke.sub.https.html to be flaky.
>
> Original change's description:
> > [FedCM] Make revoke test do actual network requests
> >
> > Instead of using a mojo mock. This tests a lot more of our code.
> >
> > Bug: 1309251
> > Change-Id: I079cbbf962ed8b95870bd51fdff35f6f37ca3974
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3680732
> > Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
> > Reviewed-by: Yi Gu <yigu@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#1011646}
>
> Bug: 1309251
> Change-Id: Iaf7e209ac4bdc0592478a330e54ec987b17b829f
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3693029
> Commit-Queue: Olivia Yingst <huiyingst@google.com>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#1011704}

Bug: 1309251
Change-Id: Ica899bfbc7395bf041473785e469368483219796
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3700042
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Christian Biesinger <cbiesinger@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1013071}

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wpt-commits: baea088014f633d3f02abfc896038884f90a42b4
wpt-pr: 34376