Bug 996069 - Part 1: nsContentUtils::IsSystemOrExpandedPrincipal. r=bz, a=lsblakk
Bug 996069 - Part 2: minor cleanup in docshell. r=bz, a=lsblakk
Bug 996069 - Part 3: Stop inheriting nsEP when window.open is called. r=bz, a=lsblakk