Bug 852253 - SUT tests failing for b2g pandas. Take Negatus change. r=aki
bug 818940 - use higher-res graphics for about:home at 150% or higher scale factor. r=fyan
bug 818940 pt 2 - also use high-res search engine logo on about:home. r=fyan
Bug 857139 - Re-enable testSystemPages code disabled in bug 852489; r=jmaher