This tarball provides upstream qtwebengine-5.15.10,
taken from the 5.15 branch.

qtwebengine is at

commit 1da56888ac5815a68e31d113a8022993a40b9f8f (HEAD -> 5.15, origin/5.15)
Author: Michal Klocek <michal.klocek@qt.io>
Date:   Thu May 19 13:57:16 2022 +0200

    Fix top level build with no widget
    
    It seems that condition module.widgets is not evaluated in time
    when configured with "-no-widget" to be picked up by the webengine
    when doing 'top level' build.
    Use 'widget' feature instead.
    
    Fixes: QTBUG-103618
    Change-Id: I881e4ba899d376690984c4866336a03d7dae246c
    Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>

rc/3rdparty/chromium is at

commit caba2fcb0fe8a8d213c4c79d26da3bb88eee61c7 (HEAD -> 87-based)
Author: Michael Brüning <michael.bruning@qt.io>
Date:   Mon May 23 12:33:01 2022 +0200

    Bump V8_PATCH_LEVEL
    
    Change-Id: I2cf0641b57550c8517502428d814c8adc841fc6c
    Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

but two additional patches have been pulled in (noticed at gentoo),
commit ecc2bb74f1f7140fc52650042299be18e826b27b
Author: Ted Meyer <tmathmeyer@chromium.org>
Date:   Wed Feb 23 01:34:20 2022 +0000

    [Backport] CVE-2022-0796: Use after free in Media
and
commit 7e11d69b957595a172a3eb60db17141daed29d63 (HEAD -> 87-based, origin/87-based)
Author: Michael Brüning <michael.bruning@qt.io>
Date:   Mon Jun 20 17:19:58 2022 +0200

    Fixup: CVE-2022-0796: Use after free in Media


