Backed out 6 changesets (bug 1006198) for webgl assertions on a CLOSED TREE

Backed out changeset 5be3c8c44eed (bug 1006198)
Backed out changeset 4b15abd14f28 (bug 1006198)
Backed out changeset bd11a10e7028 (bug 1006198)
Backed out changeset e1044a8ab189 (bug 1006198)
Backed out changeset 558abe22ab30 (bug 1006198)
Backed out changeset 5462b9babaed (bug 1006198)