Mark chromiumDev as broken since the build requires LLVM 11 which is not
yet in Nixpkgs (due to the lack of an RC, see NixOS#93324). Build error:
clang (LLVM option parsing): Unknown command line argument '-basic-aa-recphi=0'.  Try: 'clang (LLVM option parsing) --help'
clang (LLVM option parsing): Did you mean '--basicaa-recphi=0'?
ninja: build stopped: subcommand failed.

(cherry picked from commit 11fbe97)

https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.html

This update includes 15 security fixes.

CVEs:
CVE-2020-6542 CVE-2020-6543 CVE-2020-6544 CVE-2020-6545 CVE-2020-6546
CVE-2020-6547 CVE-2020-6548 CVE-2020-6549 CVE-2020-6550 CVE-2020-6551
CVE-2020-6552 CVE-2020-6553 CVE-2020-6554 CVE-2020-6555

(cherry picked from commit edb0920)

The bin script that runs chromium calls out to gnugrep - but gnugrep is
missing as a runtime dependency of the chromium package. I found this
out when I was trying to put it in a docker image.

(cherry picked from commit d433839)

The script that runs chromium calls tr from coreutils - however
it just assumed that coreutils are in PATH.

With missing coreutils chromium did still launch (at least with
d433839 applied) but emitted
`line 15: tr: command not found` error messages.

(cherry picked from commit 6e4d33a)