Bug 887703 - navigator.doNotTrack returns { "0", "1", "unspecified" }. r=jlebar

--HG--
rename : dom/tests/mochitest/general/test_bug629535.html => dom/tests/mochitest/general/test_donottrack.html
Bug 1014581 - Vibration API: clamp vibration lengths and array length to match platform restrictions. r=smaug
Bug 1012624 - Add missing return in test_navigator_language.html r=Ms2ger