Do not invoke or clear hover effects on node deletion when cursor is invisible

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 933e39f58659d1bf940fcef5f4baaaca39a57c26..7d6e736cb59209b64da43fe1468295815357e35c 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3114,6 +3114,13 @@ void Document::hoveredNodeDetached(Node* node)
     m_hoverNode = node->parentNode();
     while (m_hoverNode && !m_hoverNode->renderer())
         m_hoverNode = m_hoverNode->parentNode();
+
+    // If the mouse cursor is not visible, do not clear existing
+    // hover effects on the ancestors of |node| and do not invoke
+    // new hover effects on any other element.
+    if (!page()->isCursorVisible())
+        return;
+
     if (frame())
         frame()->eventHandler()->scheduleHoverStateUpdate();
 }