[vr] Add incognito coloring

chrome/browser/android/vr_shell/ui_elements/url_bar.h

Index: chrome/browser/android/vr_shell/ui_elements/url_bar.h
diff --git a/chrome/browser/android/vr_shell/ui_elements/url_bar.h b/chrome/browser/android/vr_shell/ui_elements/url_bar.h
index 4c83ca1c159cd220cbcb410809bc479e39fe8a8d..c2c6ca87d9058c863850b4ad9155c40eda503f7e 100644
--- a/chrome/browser/android/vr_shell/ui_elements/url_bar.h
+++ b/chrome/browser/android/vr_shell/ui_elements/url_bar.h
@@ -35,6 +35,7 @@ class UrlBar : public TexturedElement {
   void SetURL(const GURL& gurl);
   void SetSecurityLevel(int level);
   void SetBackButtonCallback(const base::Callback<void()>& callback);
+  void SetIncognito(bool incognito);
 
  private:
   void UpdateTexture() override;