Bug 880202 - Revert bug 878765 because it introduces a buffer overflow
Bug 831789 - Enhance existing peer connection mochitests to check for media flow. r=jesup
Bug 878621 - Add "cul-de-sac" to spell-checker dictionary. r=ehsan
Bug 879088 - Replace XPCOMUtils.defineLazyGetter with XPCOMUtils.defineLazyModuleGetter where modules are loaded in browser.js, AddonUpdateService.js, and SessionStore.js. r=margaret