How to test:

1. Build Servo's embedding crate (```./mach build-cef [--release]```)
2. Build ECEF (https://github.com/zmike/ecef)
3. See ECEF README
4. Enjoy CEF-powered crashes

Notes:
* The contents of `interfaces/` are entirely autogenerated. To
  regenerate, see https://github.com/zmike/cef-rebase/blob/master/README.md for full instructions