ART: Change main-thread thread paging scheme am: a79db76ced am: d3b48537ad am: a5a1146d45 am: d4b94c823f  -s ours am: 68fd95aa24  -s ours am: 7317360095  -s ours am: ff1f7b5242  -s ours am: 53f39fb9ac  -s ours am: 25c12b5751  -s ours
am: d5292e6b04  -s ours

Change-Id: Ibc427de961557f571d653535d409591bc8d9cd70