[Ozone] Fix SingleOnTop issue by checking if the quad is clipped.

ui/ozone/public/overlay_candidates_ozone.h

Index: ui/ozone/public/overlay_candidates_ozone.h
diff --git a/ui/ozone/public/overlay_candidates_ozone.h b/ui/ozone/public/overlay_candidates_ozone.h
index 23db7916d4d5cc9e52b0cfcd4561a9a6d124bc22..eedeb23280f799cfa543d0b50807321f9a585078 100644
--- a/ui/ozone/public/overlay_candidates_ozone.h
+++ b/ui/ozone/public/overlay_candidates_ozone.h
@@ -35,10 +35,13 @@ class OZONE_BASE_EXPORT OverlayCandidatesOzone {
     gfx::RectF display_rect;
     // Crop within the buffer to be placed inside |display_rect|.
     gfx::RectF crop_rect;
+    // Original visible area of the quad
+    gfx::Rect original_visible_rect;
+    // Actual visible area of the quad
+    gfx::Rect actual_visible_rect;
     // Stacking order of the overlay plane relative to the main surface,
     // which is 0. Signed to allow for "underlays".
     int plane_z_order = 0;
-
     // To be modified by the implementer if this candidate can go into
     // an overlay.
     bool overlay_handled = false;