Fix regression where the active window header was not used for apps on CrOS

ui/views/widget/desktop_aura/desktop_native_widget_aura.cc

Index: ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
diff --git a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
index e95e67e9dc9b998de626174a24b6613853952521..f06588a1a0b3a1781db07c6d7b225d9e4fa58d60 100644
--- a/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
+++ b/ui/views/widget/desktop_aura/desktop_native_widget_aura.cc
@@ -991,10 +991,6 @@ bool DesktopNativeWidgetAura::ShouldActivate() const {
 void DesktopNativeWidgetAura::OnWindowActivated(aura::Window* gained_active,
                                                 aura::Window* lost_active) {
   DCHECK(content_window_ == gained_active || content_window_ == lost_active);
-  if ((content_window_ == gained_active || content_window_ == lost_active) &&
-      IsVisible() && GetWidget()->non_client_view()) {
-    GetWidget()->non_client_view()->SchedulePaint();
-  }
   if (gained_active == content_window_ && restore_focus_on_activate_) {
     restore_focus_on_activate_ = false;
     GetWidget()->GetFocusManager()->RestoreFocusedView();