automerge: 2820911 * commit '28209111cc74e05fb6caa3d5b1756e57639247a4': Expose userActivityTimeout through @SystemApi getter/setter.
automerge: 2820911 * commit '28209111cc74e05fb6caa3d5b1756e57639247a4': Expose userActivityTimeout through @SystemApi getter/setter.