Use the chrome.processes api to interact with the browser's processes..
August 2015--------- chrome version 47 (canary) ************ It is only available to chrome users on the dev channel.
************ Text= Memory Usage https://developer.chrome.com/extensions/processes
Internet Usage extension for Google Chrome
Extension to display current internet quota usage.
A graphical usage meter for displaying Internode broadband data usage.
Analytics to help you understand and control your website usage, leading to less distractions and enhanced productivity
Improves NWTel Usage tool by automatically inputting MAC address and generating projections based on your usage.
Resource usage monitor for Google App Engine. Monitors HTTP headers for resource cost estimates when logged as an application admin.
Analyse your system performance in realtime
Keep track of your productivity on Chrome.
Monitor system's memory via toolbar popup or toolbar button's icon.
Monitoring and cleaning system for computer's CPU and RAM usage