Change GestureConfiguration types to be consistent with each other and with the

chrome/browser/resources/gesture_config.js

Index: chrome/browser/resources/gesture_config.js
diff --git a/chrome/browser/resources/gesture_config.js b/chrome/browser/resources/gesture_config.js
index 099c2880c56697dc6ad22f7220662a258670d2d6..2e5ac484fff1f797c8a6e20265a0024fc1eb5238 100644
--- a/chrome/browser/resources/gesture_config.js
+++ b/chrome/browser/resources/gesture_config.js
@@ -168,10 +168,9 @@ function GestureConfig() {
       units: 'milliseconds',
     },
     {
-      key: 'semi_long_press_time_in_seconds',
+      key: 'semi_long_press_time_in_ms',
       label: 'Semi Long Press Time',
-      units: 'seconds',
-      step: 0.1
+      units: 'milliseconds',
     },
     {
       key: 'max_separation_for_gesture_touches_in_pixels',