[Webkit-unassigned] [Bug 199322] REGRESSION(r246033/r246496): [GTK] Kinetic scrolling doesn't work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199322

--- Comment #18 from Alexander Mikhaylenko <exalm7659 at gmail.com> ---
> (What is wheel event phase?)

```
enum PlatformWheelEventPhase : uint8_t {
    PlatformWheelEventPhaseNone = 0,
    PlatformWheelEventPhaseBegan = 1 << 0,
    PlatformWheelEventPhaseStationary = 1 << 1,
    PlatformWheelEventPhaseChanged = 1 << 2,
    PlatformWheelEventPhaseEnded = 1 << 3,
    PlatformWheelEventPhaseCancelled = 1 << 4,
    PlatformWheelEventPhaseMayBegin = 1 << 5,
};
```

But that's mostly a mac thing, on GTK it's Ended if gdk_event_is_scroll_stop_event() else Changed. If it's Ended, we can try to trigger kinetic scrolling, otherwise follow fingers.

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