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 a068fbaa7edf738b5c1e7cb87a95bda7d0d02e44..490203d6bada44b15b8e0d6ddb68243e799447a9 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3126,6 +3126,13 @@ 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();
 }