Since build8-b1 went down (bug 724998), we've been down one bot on the Mac Retina perf waterfall swarming pool. This is especially problematic because this is the only Mac configuration that we have BattOrs on currently, so we currently have no Mac coverage for two of our benchmarks (system_health.common_desktop and battor.trivial_pages). 

sullivan@, nednguyen@, and I decided that probably the best course of action here is to pull off one of the Mac Retina Perf bisectors and move it into the main waterfall swarming pool.

I talked to martiniss@ offline, and he said that this likely wouldn't be too difficult and would be willing to help us out.