Auto merge of #23516 - pcwalton:webrenderup, r=pcwalton,jdm

Upgrade WebRender

This is against an old Servo because I can't build current Servo due to compile errors in RNG crates. I verified that it starts up.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #23516
- [x] There are tests for these changes

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tests/unit/metrics/paint_time.rs

@@ -9,7 +9,8 @@ use metrics::{PaintTimeMetrics, ProfilerMetadataFactory, ProgressiveWebMetric};
 use msg::constellation_msg::TEST_PIPELINE_ID;
 use profile_traits::time::{ProfilerChan, TimerMetadata};
 use servo_url::ServoUrl;
-use webrender_api::{AlphaType, ColorF, ImageDisplayItem, ImageKey, ImageRendering, LayoutSize};
+use webrender_api::units::{LayoutRect, LayoutSize};
+use webrender_api::{AlphaType, ColorF, ImageDisplayItem, ImageKey, ImageRendering};
 
 struct DummyProfilerMetadataFactory {}
 impl ProfilerMetadataFactory for DummyProfilerMetadataFactory {
@@ -118,6 +119,8 @@ fn test_first_contentful_paint_setter() {
     let image = DisplayItem::Image(CommonDisplayItem::new(
         BaseDisplayItem::empty(),
         ImageDisplayItem {
+            bounds: LayoutRect::zero(),
+            common: layout::display_list::items::empty_common_item_properties(),
             image_key: ImageKey::DUMMY,
             stretch_size: LayoutSize::zero(),
             tile_spacing: LayoutSize::zero(),

tests/wpt/metadata/css/compositing/mix-blend-mode/mix-blend-mode-both-parent-and-blended-with-3D-transform.html.ini

@@ -1,3 +1,4 @@
 [mix-blend-mode-both-parent-and-blended-with-3D-transform.html]
   type: reftest
-  expected: FAIL
+  expected:
+    if os == "linux": FAIL

tests/wpt/metadata/css/compositing/mix-blend-mode/mix-blend-mode-intermediate-element-overflow-hidden-and-border-radius.html.ini

@@ -0,0 +1,2 @@
+[mix-blend-mode-intermediate-element-overflow-hidden-and-border-radius.html]
+  fuzzy: /css/compositing/mix-blend-mode/reference/mix-blend-mode-intermediate-element-overflow-hidden-and-border-radius-ref.html:9;8

tests/wpt/mozilla/meta/css/text_decoration_underline_subpx_a.html.ini

@@ -0,0 +1,4 @@
+[text_decoration_underline_subpx_a.html]
+  bug: https://github.com/servo/servo/issues/23569
+  expected:
+    if os == "linux": FAIL