Add VR gradient and grid background to non-WebVR scene.

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

Index: chrome/browser/android/vr_shell/ui_elements/ui_element.h
diff --git a/chrome/browser/android/vr_shell/ui_elements/ui_element.h b/chrome/browser/android/vr_shell/ui_elements/ui_element.h
index 5d1d6eea36d9b1c9615f948808b45c0c38d7c9eb..e46ebf276bd43e241b93d1d1ecfb2610007d0bab 100644
--- a/chrome/browser/android/vr_shell/ui_elements/ui_element.h
+++ b/chrome/browser/android/vr_shell/ui_elements/ui_element.h
@@ -113,9 +113,6 @@ struct UiElement : public WorldRectangle {
   // Valid IDs are non-negative.
   int id = -1;
 
-  // Name string for debugging and testing purposes.
-  std::string name;
-
   // If a non-negative parent ID is specified, applicable transformations
   // are applied relative to the parent, rather than absolutely.
   int parent_id = -1;