This changeset reverts some or all edits made in changesets 168728758, 168728865, 168735664, 168779257, 168784664, 168785734, 168788152, 168902144, 168903068, 168941619, 168942649, 168949837, 168955065, 168990488, 168991498, 168992101, 168998353, 168999252, 169003421, 169004853, 169005501, 169039001, 169040559, 169047914, 169090521, 169091211, 169091695, 169098858, 169100928, 169110346, 169220227, 169221493, 169221952, 169222761, 169226813, 169230720, 169231079, 169235303, 169235743, 169270272, 169272150, 169272184, 169277936, 169280236, 169282902, 169285546, 169319778, 169321581, 169322066, 169327558, 169329024, 169329855, 169335634, 169373418, 169375429, 169375925, 169383433, 169386966, 169388991, 169390029, 169428545, 169429484, 169430986, 169436764, 169440505, 169442328.