firefox/third_party/libwebrtc/tools_webrtc/cpu

This directory contains a little utility for doing CPU measurements.
It requires a Python package, psutil, to be installed.
See: https://pypi.python.org/pypi/psutil

On mac you can install this package like so:
sudo ARCHFLAGS='-Wno-error=unused-command-line-argument-hard-error-in-future' easy_install psutil

On Windows:
- TBD (see link above)

On Linux:
- TBD (see link above)