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.

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<!-- 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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components/canvas/canvas_data.rs

@@ -941,7 +941,7 @@ impl<'a> CanvasData<'a> {
         let size = self.drawtarget.get_size();
 
         let descriptor = webrender_api::ImageDescriptor {
-            size: webrender_api::DeviceIntSize::new(size.width, size.height),
+            size: webrender_api::units::DeviceIntSize::new(size.width, size.height),
             stride: None,
             format: webrender_api::ImageFormat::BGRA8,
             offset: 0,

components/canvas/webgl_mode/inprocess.rs

@@ -159,7 +159,7 @@ impl webrender::OutputImageHandler for OutputHandler {
     fn lock(
         &mut self,
         id: webrender_api::PipelineId,
-    ) -> Option<(u32, webrender_api::FramebufferIntSize)> {
+    ) -> Option<(u32, webrender_api::units::FramebufferIntSize)> {
         // Insert a fence in the WR command queue
         let gl_sync = self
             .webrender_gl
@@ -172,7 +172,7 @@ impl webrender::OutputImageHandler for OutputHandler {
         self.lock_channel.1.recv().unwrap().map(|(tex_id, size)| {
             (
                 tex_id,
-                webrender_api::FramebufferIntSize::new(size.width, size.height),
+                webrender_api::units::FramebufferIntSize::new(size.width, size.height),
             )
         })
     }

components/canvas/webgl_thread.rs

@@ -659,7 +659,7 @@ impl<VR: WebVRRenderHandler + 'static> WebGLThread<VR> {
     /// Helper function to create a `webrender_api::ImageDescriptor`.
     fn image_descriptor(size: Size2D<i32>, alpha: bool) -> webrender_api::ImageDescriptor {
         webrender_api::ImageDescriptor {
-            size: webrender_api::DeviceIntSize::new(size.width, size.height),
+            size: webrender_api::units::DeviceIntSize::new(size.width, size.height),
             stride: None,
             format: webrender_api::ImageFormat::BGRA8,
             offset: 0,