GitLab

This Cl makes InputData in input prediction to use
PointF instead of pos_x and pos_y.
And also adds two extra unit tests to lsq predictor

Bug: 836352
Change-Id: I3e551add7536e55be82f11ed2338b0bb9dfe8e07
Reviewed-on: https://chromium-review.googlesource.com/1093392
Commit-Queue: Ella Ge <eirage@chromium.org>
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568031}