Bug 908995 - Part 1: The core implementation of TaskTracer. r=khuey.
Bug 908995 - Part 2: Track runnables, tasks and timer events with TaskTracer. r=khuey.
Bug 908995 - Part 3: Add source events for TaskTracer. r=khuey,smaug.
Bug 908995 - Part 4: Add build flags for TaskTracer. r=khuey.
Bug 984696 - Save more detailed source notes so that Debugger.Script.prototype.getAllColumnOffsets can offer more for source mapped and/or pretty printed JS debugging. r=ejpbruel
Bug 993137 - Trivial fixes. f=ochameau, r=glandium