Bug 904617: Part 1 - Add a way to get cube latency r=kinetik
Bug 904617: Part 2 - Expose Audio Stream Latency r=padenot,jesup
Bug 904617: Part 3 - Log latency, and adds a python script to understand the log r=padenot,jesup
Bug 904617: Part 4 - Add windows wasapi latency entries for cubeb r=kinetik
Backed out changeset a317a2d59ed5 (bug 904617)
Backed out changeset 81cee5ae7973 (bug 904617)
Backed out changeset 9cc6dd50c93a (bug 904617)
Backed out changeset acf80b86d630 (bug 904617) for compilation failures