chromium: update to 78.0.3904.87.
chromium: update to 78.0.3904.87.

[ci skip]

- Addresses CVE-2019-13721, CVE-2019-13720:

    https://chromereleases.googleblog.com/2019/10/stable-channel-update-for-desktop_31.html

- Built for x86_64, i686, x86_64.
- Tested on x86_64.

necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages