This directory contains components that are used by ash-chrome only. For C++ code, think of //chromeos/ash/components like top-level //components. Specifically, each component should have its own DEPS to be isolated from other components.
Much of this code used to live in //chromeos/components. The Lacros project is extracting browser functionality into a separate binary. As part of this migration, code used only by the ash-chrome binary moved into “ash” directories. See the Chrome OS source directory migration design doc for details.