Bug 848482 - Make SourceSurface work with SkiaGL r=mattwoodrow

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extra : rebase_source : ef4a315401edfad5e574ffd387c9951b12f1e9d7
Bug 859521 - Add AWS EC2 to PSL. r=gerv. DONTBUILD.

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extra : rebase_source : 9a4ac79ac4e03c2b85bf2f11c1c5366770bb1b65
Bug 823222 - We should check the host/port before running tests, r=mdas