Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/Display/Source/ViewControllerTracingNode.swift

@@ -0,0 +1,37 @@
+import Foundation
+import UIKit
+import AsyncDisplayKit
+
+private final class ViewControllerTracingNodeView: UITracingLayerView {
+    private var inHitTest = false
+    var hitTestImpl: ((CGPoint, UIEvent?) -> UIView?)?
+    
+    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+        if self.inHitTest {
+            return super.hitTest(point, with: event)
+        } else {
+            self.inHitTest = true
+            let result = self.hitTestImpl?(point, event)
+            self.inHitTest = false
+            return result
+        }
+    }
+}
+
+open class ViewControllerTracingNode: ASDisplayNode {
+    override public init() {
+        super.init()
+        
+        self.setViewBlock({
+            return ViewControllerTracingNodeView()
+        })
+    }
+    
+    override open func didLoad() {
+        super.didLoad()
+        
+        (self.view as! ViewControllerTracingNodeView).hitTestImpl = { [weak self] point, event in
+            return self?.hitTest(point, with: event)
+        }
+    }
+}