100644 blob cc574128d90eabb2bce85f340af19f651eee11e6	BUILD.gn
040000 tree 194791d0451862ec0646022cde11a49460c4156e	experimental
040000 tree 8046cff77bf639d12b03c6bb578618ad82c289da	privacy
040000 tree c823a44dd464b925330a1918c94b34f1639da428	random
040000 tree 2dfc351681c185428cc6115c9c0b1e0a6d0bd0eb	rappor