Backed out changeset 163daa0ef353
merge backout

--HG--
extra : rebase_source : cfe6765441f94a2ea9ffe63258f4fda7e0e47e67
Bug 835953 - Remove browser-specific notification when a page releases webcam/microphone access. r=dolske

--HG--
extra : rebase_source : 69454e2461746853981e0de7161be62c08f25f1a
Bug 841714 - Set the 'validate' attribute directly on tab-icon-image rather than inheriting it from the tab. r=gavin

--HG--
extra : rebase_source : 065499b0c59adc3c6e7483a6c1116f02e4eb3a34