Busybody: Format GN files

This CL introduces no behavioral change. It was generated by issuing

```
git ls-files -- '*.gni' '*.gn' \
  | xargs gn format
```

just to prevent unlucky folks from having to deal with a presubmit
error about formatting, forcing them to introduce an unrelated diff to
their CL.

Bug: 515185457
Change-Id: I20834b0dd3e1f08a0058f7ee68b993b1f16e26ab
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/7885561
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>