servo: Merge #16113 - Update WR (opaque rect optimization, stacking context culling) (from glennw:update-wr-opaque-opt); r=mrobinson

Source-Repo: https://github.com/servo/servo
Source-Revision: 3b79bc25825ea416298b1917e0bd409b7044f837

servo/components/canvas/canvas_paint_thread.rs

@@ -567,7 +567,8 @@ impl<'a> CanvasPaintThread<'a> {
                                                 offset: 0,
                                                 is_opaque: false,
                                             },
-                                            element.into());
+                                            element.into(),
+                                            None);
 
             let data = CanvasImageData {
                 image_key: self.webrender_image_key,

servo/components/canvas/webgl_paint_thread.rs

@@ -261,7 +261,8 @@ impl WebGLPaintThread {
                                                offset: 0,
                                                is_opaque: false,
                                            },
-                                           pixels.clone());
+                                           pixels.clone(),
+                                           None);
 
                 let image_data = CanvasImageData {
                     image_key: image_key,