This reverts commit 880602eb64 [1],
which was committed with a wrong author email address and lacked license
notice in some files. To avoid confusion, this we decided to
temporarily revert that CL so that we can commit it with proper license
notice and author address again.
[1]: I16226ce393f2d15065d08e66a36d008eb1a0c8a1
Bug: 22512982
Bug: 28098677
Change-Id: I3dd3c7bf0ee9634fc4f3bf433bf5023675873e46