Add a flag to update hover effect when a layout is changed

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 486d5310abcee8f09af2d149e063f02505b910ab..5700d701d8e864b735a27d3f3a0ef320ebfa0b57 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -2089,8 +2089,10 @@ void Document::UpdateStyleAndLayoutTree() {
   // have been detached (for example, by setting display:none in the :hover
   // style), schedule another mouseMove event to check if any other elements
   // ended up under the mouse pointer due to re-layout.
-  if (HoverElement() && !HoverElement()->GetLayoutObject() && GetFrame())
-    GetFrame()->GetEventHandler().DispatchFakeMouseMoveEventSoon();
+  if (HoverElement() && !HoverElement()->GetLayoutObject() && GetFrame()) {
+    GetFrame()->GetEventHandler().DispatchFakeMouseMoveEventSoon(
+        MouseEventManager::FakeMouseMoveReason::kPerFrame);
+  }
 
   if (focused_element_ && !focused_element_->IsFocusable())
     ClearFocusedElementSoon();