This update for chromium fixes the following issues:

- more fixes for desktop file, some variables were lowercased,
  further adaptions in INSTALL script (boo#1258199)

- also copy rollup into third_party/node/node_modules
- stay on llvm-10 for swiftshader but bring a similar patch

- drop use of rollup binaries and use rollup-3.x which does not
  use prebuilt binaries (that fail at least on older ppc64le)
  follow the approach of the debian packaging

- update/resync ppc64le patches from fedora