[TabTearing] Reparent tab dragged/dropped to open new Chrome window

Demo: https://screencast.googleplex.com/cast/NjY2NjEzNzU1ODMxOTEwNHw5YmIwODZlMi03Mw

Bug: 331276611
Change-Id: I271df7785e4d9ba892e9f5340ae74ecbeda8558a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5392092


Reviewed-by: Wenyu Fu <wenyufu@chromium.org>
Commit-Queue: Aishwarya Rajesh <aishwaryarj@google.com>
Reviewed-by: Theresa Sullivan <twellington@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1280310}