New script: curve_experiment

This script will update mouse acceleration curves to different settings.

BUG=chromium:359288
TEST=run the script and check if the mouse acceleration on all connected
mice changes.

Change-Id: Ic6f1de87ebbf0d09e744546d8bce75e509db3cb8
Reviewed-on: https://chromium-review.googlesource.com/192932
Reviewed-by: Andrew de los Reyes <[email protected]>
Tested-by: Dennis Kempin <[email protected]>
Commit-Queue: Dennis Kempin <[email protected]>
diff --git a/xinput.sh b/xinput.sh
index 3a5b41b..93959da 100755
--- a/xinput.sh
+++ b/xinput.sh
@@ -137,8 +137,8 @@
 
 device_set_prop() {
   assert_eq $# 3
-  log "$XINPUT set-prop \"$1\" \"$2\" \"$3\""
-  $XINPUT set-prop "$1" "$2" "$3"
+  log "$XINPUT set-prop \"$1\" \"$2\" $3"
+  $XINPUT set-prop "$1" "$2" $3
 }
 
 device_get_prop() {