[Webkit-unassigned] [Bug 147320] New: Use _NSScrollingPredominantAxisFilter for wheel event filtering on Mac

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147320

            Bug ID: 147320
           Summary: Use _NSScrollingPredominantAxisFilter for wheel event
                    filtering on Mac
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Macintosh
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wenson_hsieh at apple.com

AppKit now exposes _NSScrollingPredominantAxisFilter, so refactor Mac to use it for wheel event filtering instead of WheelEventDeltaTracker. Make sure this doesn't break wheel event filtering that other platforms by using the WheelEventDeltaTracker as a fallback.

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