Remove ash::switches::UseImmersiveFullscreenForAllWindows()

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

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
index e75277baa081cb965aa1e55ea19f243ab997a0f2..2a872bf8fe32c48021c66549b8ebe708502b8082 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views.cc
@@ -508,12 +508,10 @@ views::NonClientFrameView* ChromeNativeAppWindowViews::CreateNonClientFrameView(
       // Non-frameless app windows can be put into immersive fullscreen.
       // TODO(pkotwicz): Investigate if immersive fullscreen can be enabled for
       // Windows Ash.
-      if (ash::switches::UseImmersiveFullscreenForAllWindows()) {
-        immersive_fullscreen_controller_.reset(
-            new ash::ImmersiveFullscreenController());
-        custom_frame_view->InitImmersiveFullscreenControllerForView(
-            immersive_fullscreen_controller_.get());
-      }
+      immersive_fullscreen_controller_.reset(
+          new ash::ImmersiveFullscreenController());
+      custom_frame_view->InitImmersiveFullscreenControllerForView(
+          immersive_fullscreen_controller_.get());
 #endif
       custom_frame_view->GetHeaderView()->set_context_menu_controller(this);
       return custom_frame_view;