Filter GestureFlingStarts with Vx=Vy=0 in RenderWidgetHostViewChildFrame

ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc

Index: ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc
diff --git a/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc b/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc
index 3e8164ae9056ad09f76d197e17b4854489c70a14..dc1ec57f16682510f7fb3e01d65545b2cb6183c3 100644
--- a/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc
+++ b/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc
@@ -333,16 +333,12 @@ void GestureInterpreterLibevdevCros::OnGestureFling(const Gesture* gesture,
   if (!cursor_)
     return;  // No cursor!
 
-  // We may receive a request for a GESTURE_FLING_START with zero velocity; in
-  // this case send a ET_SCROLL_FLING_CANCEL in case it's needed to stop a
-  // fling in progress.
-  // TODO(wjmaclean): is it possible to get consecutive GESTURE_FLING_STARTs?
-  bool should_fling_start = fling->fling_state == GESTURES_FLING_START &&
-                            (fling->vx != 0 || fling->vy != 0);
   EventType type =
-      (should_fling_start ? ET_SCROLL_FLING_START : ET_SCROLL_FLING_CANCEL);
+      (fling->fling_state == GESTURES_FLING_START ? ET_SCROLL_FLING_START
+                                                  : ET_SCROLL_FLING_CANCEL);
 
-  // Fling is like 2-finger scrolling but with velocity instead of displacement.
+  // Fling is like 2-finger scrolling but with
+  // velocity instead of displacement.

[wjmaclean, 2016/07/22 00:42:01]

I'll undo this unintended re-formatting before landing too.

   dispatcher_->DispatchScrollEvent(ScrollEventParams(
       id_, type, cursor_->GetLocation(), gfx::Vector2dF(fling->vx, fling->vy),
       gfx::Vector2dF(fling->ordinal_vx, fling->ordinal_vy),