Bug 1106695 - Part 0: Define require in toolkit/devtools/tests/unit/head_devtools.js. r=trivial
Bug 1106695 - Part 1: Add toolkit/devtools/RedBlackTree.js. r=jimb
Bug 1106695 - Part 2: Add toolkit/devtools/IntervalTree.js. r=jimb
Bug 1106695 - Part 3: Add toolkit/devtools/server/actors/utils/ScriptStore.js. r=jimb
Bug 1106695 - Part 4: Use ScriptStore in the script actors. r=jimb