Touch: Increase scroll buffer size for experiments

To run an experiment to see if changing the scroll buffer size impacts
user experience at all on the touchpad I need to make the buffer bigger,
so we can try some really big values.  Right now it only goes up to 6,
which is probably good, but for the experiment, it'd be nice to try at
least one really big number, to make sure.  This ups the buffer size to
15, and once the experiment is done we can bring it down to a more
reasonable number based on what people preferred.

BUG=chromium-os:36421
TEST=Manual, I gmerged this CL onto a device I have and everything still
worked fine.

Original-Change-Id: Icfa194f2a86ff12d0ceeafc5aadbcf2e2827efec
Originally-Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Originally-Reviewed-on: https://gerrit.chromium.org/gerrit/41643
Originally-Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
(cherry picked from commit 37660a15db186d741a43e88f76cf33fc4434f83b)

Change-Id: I8f37251cdeb936be38b2da86e5d09c0e5e2ec7dd
Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/41963
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
1 file changed