Bug 841740 - Work around l10n repack bustage with --enable-metro. r=jimm,r=Callek DONTBUILD
No bug, Automated blocklist update from host bld-linux64-ec2-636 - a=blocklist-update
Bug 842442 - Return NO_DEVICES_FOUND error when only video or only audio is requested with no suitable device available. r=dolske
Merge mozilla-central into mozilla-inbound