Babysitter slaves for Nexus7
Babysitter slaves for Nexus7

BUG=skia:5185

Review-Url: https://codereview.chromium.org/1977393002

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot