Trigger style recalc when the window's active state change

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 da26df8090ffc4234346a4612136f58232dca2ee..3bd8076ddc189acacd32fb68c1208004a4a5a8a5 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -1930,6 +1930,13 @@ void Document::updateLayout()
         lifecycle().advanceTo(DocumentLifecycle::LayoutClean);
 }
 
+
+void Document::updateRenderTreeOnFocusChanged()
+{
+    setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::createWithExtraData(StyleChangeReason::PseudoClass, StyleChangeExtraData::Focus));
+    updateRenderTreeIfNeeded();
+}
+
 void Document::setNeedsFocusedElementCheck()
 {
     setNeedsStyleRecalc(LocalStyleChange, StyleChangeReasonForTracing::createWithExtraData(StyleChangeReason::PseudoClass, StyleChangeExtraData::Focus));