This addresses #1955
CPU throttling needs to be applied to both the primary puppeteer session
and the secondary CDP session from the DevTools universe to have an
effect.
For network throttling this does not seem to be the case, I can see a
slowdown with the current implementation which only applies the network
throttling to the primary CDP session.
I also had to increase the navigation timeout to prevent timeout errors.
Wolfgang Beyer
3ade962a8d