Chromium Embedded Framework

Chromium Embedded Framework (CEF) is an extension of the Chromium browser rendering engine, an open-source project which is a component of Google Chrome.

In relation to Valve

It is reported that Valve's latest iteration of the Steam content-delivery platform is using a variation of the CEF to render web content. This is a departure from previous versions, which internally used Internet Explorer and was thus tied to Windows platforms.

The Source code for Valve's usage of the Chromium Embedded Framework can be downloaded here: [1]

This drop is based off the CEF code base at revision 65 and the Chromium code base at revision 35902.