This is just a minor upgrade, even though the commit message says it's
to major version 50. However, the CVEs listed there are for real, see
the following announcement:
http://googlechromereleases.blogspot.de/2016/03/stable-channel-update_8.html
The summary of updated packages:
stable: 49.0.2623.75 -> 49.0.2623.87
beta: 49.0.2623.75 -> 50.0.2661.26
dev: 50.0.2661.11 -> 50.0.2661.18
I've also added two commits, fixing the chdir() in the updater and
shutting up Python precompilation errors during the preBuild phase.
Tested on my Hydra at:
https://headcounter.org/hydra/eval/312166