Bug 874641 - Fix warning: xpcom/base/nsUUIDGenerator.cpp [-Wsign-compare]. r=bsmedberg
Bug 869280 - Add modalRoot to pivot API. rs=surkov
Bug 869280 - tests for modalroot. r=davidb
Bug 775621 - Add traversal flag for aria-hidden. r=surkov
Bug 775621 - Introduce aria-hidden tests for pivot API. r=surkov
bug 869278 fix intermittent failure in browser_social_mozSocial_API.js, r=felipe
Bug 865023 - Introduce a prefs cache and listener utility. r=yzen
Bug 875463 - Part 0. Remove plain-loop.html and fix --repeat for single tests. r=jmaher
Bug 875463 - Implement --run-until-failure option for mochitests. r=jmaher
Bug 875737 - Add androidx86.json to mochitests. r=jmaher DONTBUILD
Backed out changeset dc96b4762676 (bug 875402) because of crashtest leaks