[gnome-shell/wip/exalm/gestures-part-3] fixup! swipeTracker: Introduce swipe tracker

[Alexander Mikhaylenko <alexm src gnome org>]

commit d53f20e9f2d521f8bbf918401a5b9410ccdcebc9
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Fri Jan 10 14:47:18 2020 +0500

    fixup! swipeTracker: Introduce swipe tracker

 js/ui/swipeTracker.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/swipeTracker.js b/js/ui/swipeTracker.js
index 4b247bfdd0..c9f19a8864 100644
--- a/js/ui/swipeTracker.js
+++ b/js/ui/swipeTracker.js
@@ -445,8 +445,11 @@ var SwipeTracker = GObject.registerClass({
 
     /**
      * canHandleScrollEvent:
-     * @param {Clutter.Event} event: an event to check
+     * @param {number} event: an event to check
      * @returns {bool} whether the event can be handled by the tracker
+     *
+     * This function can be used to combine swipe gesture and mouse
+     * scrolling.
      */
     canHandleScrollEvent(event) {
         if (!this.enabled || this._scrollGesture === null)