No bug - Re-disable test_mixed_principals.html on all platforms.
Bug 951496 - Fix Stastistics typo in vie_codec. r=jesup
Bug 951496 - Statistics data for checking the status of codec. r=jesup
Bug 951496 - Codec getStats. r=smaug, r=jesup
Bug 951496 - Codec telemetry. r=jesup