* gnu/packages/chromium.scm (%preserved-third-party-files): Adjust for 76.
(%chromium-version): Set to 76.0.3809.87.
(%ungoogled-revision): Set to 6ea939002bae43a27910e03569d43519d07842e7.
(%debian-revision): Set to debian/76.0.3809.87-2.
(%chromium-origin, %ungoogled-origin, %debian-origin): Update hashes.
(gentoo-patch, gentoo-patches): New procedures.
(%auxiliary-patches): New variable.
(ungoogled-chromium-source): Ignore Ungoogleds bundled Debian patches, as well
as some of Debians build fixes. Apply %AUXILIARY-PATCHES.
(ungoogled-chromium)[arguments]: Adjust unbundling substitutions. Do not set
Blink symbol level.
7f2e852267