GitLab

Adds a metric for the kTouchpadSpeed setting on the Device Page. It
records the sensitivity value that the slider was set to.

Bug: 1133553
Change-Id: I85cbc27b0bced774672fa1bbbcbc2508ff23092c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2459789
Commit-Queue: Daniel Classon <dclasson@google.com>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816765}