Bug 1039500 - Created a field with a WeakMap to record the tab for each browser and made _getTabForBrowser non-private. r=dao
Bug 1076887 - Update the tree's copy of the mozilla/source-map library to 0.1.40. r=past
Bug 1077376 - don't prettify original sources in the style editor. r=pbrosset
Bug 1007436 - "Revamp visual design of about:feedback". r=margaret.leibovic f=alam