tree 6fca725f32754a4da8d43c23cf6aeb7553fd4d89
parent 77b0e867db8c45aa673262b5a01b9428baf434c4
author Sarah Parker <sarahparker@google.com> 1563493628 -0700
committer Sarah Parker <sarahparker@google.com> 1570125029 -0700

Add 4 way vert and horz split

This gives about 0.1% gain, bringing up the experiment gains
to 0.55%.

Change-Id: I88a9f9705f71677b72e33c1b2958a2770d8fa8af