Bug 1034138 - a. Get native stack for permahangs in BHM; r=snorp
Bug 1034138 - b. Add thread hang native stack output to nsITelemetry; r=vladan
Bug 1034138 - c. Display thread hang native stack in about:telemetry if available; r=vladan
Bug 1034138 - d. Test BackgroundHangMonitor permahangs; r=vladan
Bug 1034138 - e. Don't log large amounts of data when running devtools xpcshell tests; r=jryans