040000 tree debc375245bdd9885eb229e46c8a6e6217215b85	googletest
040000 tree d5f2f58cfc79b9b8928108632d786c70085e9728	libwebm
040000 tree acb1aafed6c7630541d3bf31a5b7c182c0eef040	libyuv
040000 tree 9d014dcb07a1672fc743819800b6aaeaa3e8b954	x86inc