Implementation of DBSC, https://github.com/WICG/dbsc/blob/main/README.md.

Currently in the prototyping stage and only supported on windows.

Chromium Bugs tree: https://issues.chromium.org/issues/355059881/dependencies

Related documents can be found in
https://drive.google.com/drive/folders/1xL5GnXS6XtBlf96UROkW4gAbvsInB-Fd.
Documents here are specific to the Chromium implementation, or motivation
behind design choices. For generic DBSC docs they should go to the public
Github at https://github.com/WICG/dbsc.