[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_scene_manager.h

Index: chrome/browser/android/vr_shell/ui_scene_manager.h
diff --git a/chrome/browser/android/vr_shell/ui_scene_manager.h b/chrome/browser/android/vr_shell/ui_scene_manager.h
index 6a0cec9b7de630ae59e97a81ad783042f03ff609..487ed9348342e3d3033a3889b5bb0704245f5ea2 100644
--- a/chrome/browser/android/vr_shell/ui_scene_manager.h
+++ b/chrome/browser/android/vr_shell/ui_scene_manager.h
@@ -35,6 +35,7 @@ class UiSceneManager {
   base::WeakPtr<UiSceneManager> GetWeakPtr();
 
   void SetFullscreen(bool fullscreen);
+  void SetIncognito(bool incognito);
   void SetURL(const GURL& gurl);
   void SetWebVrSecureOrigin(bool secure);
   void SetWebVrMode(bool web_vr);
@@ -93,6 +94,7 @@ class UiSceneManager {
   bool web_vr_mode_;
   bool secure_origin_ = false;
   bool fullscreen_ = false;
+  bool incognito_ = false;
   bool is_exiting_ = false;
 
   int next_available_id_ = 1;