Bug 1035275 - Remove unused base Chromium code. r=bbondy
Bug 1038563 - Rename JS::Zone's jit-specific barrier state from Ion to jit. r=jandem
Bug 1037729 - Moving callbacks to run after reaching steady state. r=jib
Bug 1037184 - Extended the speculative connection overrider to track predictor preconnects. r=hurley