[Webkit-unassigned] [Bug 253011] New: [UI-side compositing] Lock CALayer tree for scrolling thread hit-testing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=253011

            Bug ID: 253011
           Summary: [UI-side compositing] Lock CALayer tree for scrolling
                    thread hit-testing
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: simon.fraser at apple.com

RemoteScrollingTreeMac::eventListenerRegionTypesForPoint() will use the CALayer tree off the main thread, so we should lock around this, and layer tree commits.

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