# //ash/webui //ash/webui contains code that is Chrome OS-specific WebUI for system web apps and has dependencies on //content. General purpose window manager or system UI code should not have content dependencies, and should not live in this directory. Prefer a different top-level ash directory, like //ash/system, //ash/wm, or add //ash/your_feature. Low-level components go in //ash/components/your_feature. Each subdirectory should be its own separate "module", and have its own BUILD.gn file. See this directory's [BUILD.gn file][1] for tips on adding your own subdirectory. This directory is in //ash because it runs in the "ash-chrome" binary when Lacros is running. Most of its subdirectories used to live in //chromeos/components. See the [Lacros documentation][2] or the Lacros [directory migration design][3]. [1]: /ash/webui/BUILD.gn [2]: /docs/lacros.md [3]: https://docs.google.com/document/d/1g-98HpzA8XcoGBWUv1gQNr4rbnD5yfvbtYZyPDDbkaE/edit#heading=h.5aq0kntd3afh