Spinner elements not to dispatch change event on hover

Source/core/html/shadow/SpinButtonElement.cpp

Index: Source/core/html/shadow/SpinButtonElement.cpp
diff --git a/Source/core/html/shadow/SpinButtonElement.cpp b/Source/core/html/shadow/SpinButtonElement.cpp
index 04e21b86af6f1ea332e91be804b0b1b0519bbc43..199e8e1f05614bf8f83ca720c74627c98568d14d 100644
--- a/Source/core/html/shadow/SpinButtonElement.cpp
+++ b/Source/core/html/shadow/SpinButtonElement.cpp
@@ -47,6 +47,7 @@ inline SpinButtonElement::SpinButtonElement(Document& document, SpinButtonOwner&
     : HTMLDivElement(document)
     , m_spinButtonOwner(&spinButtonOwner)
     , m_capturing(false)
+    , m_isMouseEvent(false)
     , m_upDownState(Indeterminate)
     , m_pressStartingState(Indeterminate)
     , m_repeatingTimer(this, &SpinButtonElement::repeatingTimerFired)
@@ -87,7 +88,7 @@ void SpinButtonElement::defaultEventHandler(Event* event)
             HTMLDivElement::defaultEventHandler(event);
         return;
     }
-
+    m_isMouseEvent = true;
     MouseEvent* mouseEvent = toMouseEvent(event);
     IntPoint local = roundedIntPoint(box->absoluteToLocal(mouseEvent->absoluteLocation(), UseTransforms));
     if (mouseEvent->type() == EventTypeNames::mousedown && mouseEvent->button() == LeftButton) {
@@ -198,8 +199,10 @@ void SpinButtonElement::releaseCapture()
             if (Page* page = document().page())
                 page->chrome().unregisterPopupOpeningObserver(this);
         }
-        if (m_spinButtonOwner)
-            m_spinButtonOwner->spinButtonDidReleaseMouseCapture();
+    }
+    if (m_spinButtonOwner && m_isMouseEvent) {
+        m_spinButtonOwner->spinButtonDidReleaseMouseCapture();
+        m_isMouseEvent = false;
     }
 }