Backed out 5 changesets (bug 1770133) on beta, large refactoring during soft code freeze, needs nightly bake time a=backout

Backed out changeset 8596922e3e2e (bug 1770133)
Backed out changeset 6151c1cf0404 (bug 1770133)
Backed out changeset 7322de6f865f (bug 1770133)
Backed out changeset df84cc3d5d23 (bug 1770133)
Backed out changeset b92de4a984f1 (bug 1770133)