This reverts commit a4b38b9f6e.
Reason for revert: Fixed the test flakiness that caused the first attempt to be reverted in https://crbug.com/1515720 and https://crbug.com/1515794.
Original change's description:
> Revert "Add field trial test config for IsolateSandboxIframes study."
>
> This reverts commit 1aeb9ea2da.
>
> Reason for revert: Potential culprit for a consistent test failure.
> Please see https://crbug.com/1515720 for more details.
>
> Original change's description:
> > Add field trial test config for IsolateSandboxIframes study.
> >
> > This CL sets the necessary config to force tests to run with
> > the same settings as the trial, with per-origin mode being the
> > expected launch config.
> >
> > A number of WPTs fail in the new configuration dues to existing
> > bugs. These are:
> >
> > ** Issue 1407078: beforeunload handlers triggered by window.close()
> > don't work in OOPIFs
> >
> > fast/frames/sandboxed-iframe-close-top-noclose.html
> > fast/frames/sandboxed-iframe-close-top.html
> >
> > ** Issue 1066891: TestDriver click is flaky with cross-origin frames:
> >
> > external/wpt/bluetooth/requestDevice/sandboxed_iframe.https.window.html
> > external/wpt/bluetooth/requestLEScan/sandboxed_iframe.https.window.html
> > virtual/web-bluetooth-new-permissions-backend/external/wpt/bluetooth/requestDevice/sandboxed_iframe.https.window.html
> > virtual/web-bluetooth-new-permissions-backend/external/wpt/bluetooth/requestLEScan/sandboxed_iframe.https.window.html
> >
> > A number of WPTs have slightly different expected text output
> > with the new feature, since some warning console message are
> > treated differently for local vs. remote frames, and
> > IsolateSandboxIframes causes some frames that used to be local
> > to become remote.
> > (In these cases, the existing expected output has been updated to
> > match what a remote frame would show, with the original output
> > copied to a flag-specific directory since the tests also run in
> > the virtual test suite "disable-site-isolation-trials" without
> > the IsolateSandboxIframes behavior).
> >
> > third_party/blink/web_tests/fast/frames/sandboxed-iframe-close-top-noclose-expected.txt
> > third_party/blink/web_tests/fast/frames/sandboxed-iframe-navigation-top-denied-expected.txt
> > third_party/blink/web_tests/http/tests/security/no-popup-from-sandbox-top-expected.txt
> > third_party/blink/web_tests/http/tests/security/sandboxed-iframe-form-top-expected.txt
> >
> > Bug: 510122, 1407078, 1066891
> > Change-Id: Ib37e7d362c0e4362500232eb7bd454ae7096b12c
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4982170
> > Reviewed-by: David Bokan <bokan@chromium.org>
> > Reviewed-by: Charlie Reis <creis@chromium.org>
> > Commit-Queue: W. James Maclean <wjmaclean@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#1243051}
>
> Bug: 510122, 1407078, 1066891
> Change-Id: I713341ac25adb8ff8a976b8f825d92e93d38e76e
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5171326
> Commit-Queue: Yue Zhang <yuezhanggg@chromium.org>
> Auto-Submit: Yue Zhang <yuezhanggg@chromium.org>
> Reviewed-by: Sinan Sahin <sinansahin@google.com>
> Owners-Override: Yue Zhang <yuezhanggg@chromium.org>
> Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
> Reviewed-by: W. James Maclean <wjmaclean@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1243183}
Bug: 510122, 1407078, 1066891
Change-Id: I88807366d1e8fcce62b3736d0e80c4da3e0599eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5186035
Reviewed-by: Charlie Reis <creis@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: W. James Maclean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1245458}
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