Hide/show widget on Windows screen lock/unlock

ui/views/widget/widget.cc

Index: ui/views/widget/widget.cc
diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
index 84fa83ec405f0798088bfc086b551bf89640e846..e464a0fae8312684ab26025ea11946eaaf6ef298 100644
--- a/ui/views/widget/widget.cc
+++ b/ui/views/widget/widget.cc
@@ -1068,6 +1068,11 @@ void Widget::OnNativeWidgetVisibilityChanged(bool visible) {
     root->layer()->SetVisible(visible);
 }
 
+void Widget::OnSoftVisibilityChanged(bool visible) {
+  if (View* root = GetRootView())
+    root->PropagateSoftVisibilityChanged(visible);
+}
+
 void Widget::OnNativeWidgetCreated(bool desktop_widget) {
   if (is_top_level())
     focus_manager_.reset(FocusManagerFactory::Create(this, desktop_widget));