The other thing from that chromium code is that the closing order should be different. In the case you describe of having opened B, C and D background tabs. Closing D should not focus A (which created it) but instead focus C.
The other thing from that chromium code is that the closing order should be different. In the case you describe of having opened B, C and D background tabs. Closing D should not focus A (which created it) but instead focus C.