Bug 35168 - Backout 4 changesets (e15a7a0c8f70, 852b5ce53278, f36adee1958f, 479ff28f783f) for B2G bustage and reftest failures ON A CLOSED TREE

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extra : amend_source : 2be4ad526c51311c6f03b2681dd3961c1502c303