VR: Improving UI colors and elements positioning

chrome/browser/android/vr_shell/color_scheme.h

Index: chrome/browser/android/vr_shell/color_scheme.h
diff --git a/chrome/browser/android/vr_shell/color_scheme.h b/chrome/browser/android/vr_shell/color_scheme.h
index 9f14c5ac2959919a06a9eeba054759a00f44bc31..ebbed05f57c648c06addb7ec75c328016008560a 100644
--- a/chrome/browser/android/vr_shell/color_scheme.h
+++ b/chrome/browser/android/vr_shell/color_scheme.h
@@ -48,6 +48,10 @@ struct ColorScheme {
 
   // The color used for disabled icons.
   SkColor disabled;
+
+  // Colors used for the loading progress bar indicator.
+  SkColor loading_background;
+  SkColor loading_foreground;
 };
 
 }  // namespace vr_shell