This changeset reverts some or all edits made in changesets 152082342, 152247144, 154649994, 154739784, 154748278, 154886939, 154887635, 154888689, 154900523, 154931549, 154966058, 154967289, 154974830, 154976184, 154976301, 154987614, 155018470, 155136599, 155137900, 155137934, 155137998, 155562602, 155929322.