Bug 1080801 - update comments for sessionHistory tests, rs=comments-only
DONTBUILD because comments only change.

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extra : rebase_source : f7db64a3a2c349d696a75b85dee21b58c3a4e8f9
Bug 1080801 - enable tests relying on DOMLinkAdded, r=ally

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extra : rebase_source : 20f0ff291610a2394aa4e50b3d4fe63b8a633077
Bug 1080801 - update e10s skipping for browser/base tests, step 1 of N: zoom, r=ally

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extra : rebase_source : e82dcb90635c56664451cab8dede42a5fedd81ed