Enable immersive fullscreen for non-browser windows by default

chrome/browser/ui/views/apps/native_app_window_views.cc

Index: chrome/browser/ui/views/apps/native_app_window_views.cc
diff --git a/chrome/browser/ui/views/apps/native_app_window_views.cc b/chrome/browser/ui/views/apps/native_app_window_views.cc
index e48e1b8eca29522df769666b690f5602c41aae1f..7073fa101ca2b2d8cbee7d26bc8bc06881f255a4 100644
--- a/chrome/browser/ui/views/apps/native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/native_app_window_views.cc
@@ -728,8 +728,7 @@ views::NonClientFrameView* NativeAppWindowViews::CreateNonClientFrameView(
       // Non-frameless app windows can be put into immersive fullscreen.
       // TODO(pkotwicz): Investigate if immersive fullscreen can be enabled for
       // Windows Ash.
-      if (CommandLine::ForCurrentProcess()->HasSwitch(
-              ash::switches::kAshEnableImmersiveFullscreenForAllWindows)) {
+      if (ash::switches::UseImmersiveFullscreenForAllWindows()) {
         immersive_fullscreen_controller_.reset(
             new ash::ImmersiveFullscreenController());
         custom_frame_view->InitImmersiveFullscreenControllerForView(