Revert "Fixes cleanup check for non-parent owned windows"

This reverts commit d67a285fb96aae2681f64b57cb51d5b41d812d3c.

Reason for revert: Causes OverscrollNavigationOverlayTest.OverlayWindowSwap failure, e.g.:
https://luci-milo.appspot.com/p/chromium/builders/luci.chromium.ci/Linux%20MSan%20Tests/13565

Original change's description:
> Fixes cleanup check for non-parent owned windows
> 
> NOTRY=true
> TBR=dtseng@chromium.org,jamescook@chromium.org
> 
> Change-Id: I8ca0b4f6d466d5ac45260d5fbd5a874565d17a92
> Reviewed-on: https://chromium-review.googlesource.com/c/1375113
> Reviewed-by: David Tseng <dtseng@chromium.org>
> Commit-Queue: David Tseng <dtseng@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#616204}

TBR=dtseng@chromium.org

Change-Id: I89c5b934602cf056b63b9fc4838332cddfcc7273
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1375122
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616261}
1 file changed