Bug 926289 - Part 1, Add recording type and request URL in recording-device-events. r=khuey.
Bug 926289 - Part 2, Carry recording type and request URL in recording-device-events in gUM API. r=jesup.
Bug 926289 - Part 3, Carry recording type and request URL in recording-device-events in Camera API. r=mikeh.
Bug 926289 - Part 4, Separate recording status for each process. r=vingtetun,jesup.