Bug 820170 - Wrapping nodes into documents compartment. r=bholley
Bug 854077 - Use radio buttons for "Do Not Track" options and add a neutral option r=ally

--HG--
rename : browser/metro/base/tests/mochitest/browser_sanitize_ui.js => browser/metro/base/tests/mochitest/browser_prefs_ui.js
extra : rebase_source : 331345b81ff030f6cd6fa2f2e1bf20f276c82ce7