Fallback to root layer if hit-testing does not hit anything in iframe

Source/core/input/EventHandler.cpp

Index: Source/core/input/EventHandler.cpp
diff --git a/Source/core/input/EventHandler.cpp b/Source/core/input/EventHandler.cpp
index 9576c8bff491641bea1524683fdc2493de98e9e8..74b987a2477a4e15e977ff3b289cf69993a9d905 100644
--- a/Source/core/input/EventHandler.cpp
+++ b/Source/core/input/EventHandler.cpp
@@ -1730,9 +1730,7 @@ bool EventHandler::handleWheelEvent(const PlatformWheelEvent& event)
 
     LayoutPoint vPoint = view->rootFrameToContents(event.position());
 
-    // Pass Active to ensure that hit-test result in current document if otherwise empty
-    // TODO(majidvp): Avoid using Active to trigger hit-testing fallback. See http://crbug.com/505825
-    HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
+    HitTestRequest request(HitTestRequest::ReadOnly);
     HitTestResult result(request, vPoint);
     doc->layoutView()->hitTest(result);