Reenable page_cycler.basic_oopif on reference builds.
Reenable page_cycler.basic_oopif on reference builds.

This was disabled on reference builds in August 2015. I think the
reference builds have been updated since then, so it's likely OK to
run again.

BUG=523346
CQ_EXTRA_TRYBOTS=tryserver.chromium.perf:winx64_10_perf_cq;tryserver.chromium.perf:mac_retina_perf_cq;tryserver.chromium.perf:linux_perf_cq

Review-Url: https://codereview.chromium.org/1944423002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#393917}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk