Do not start up webvr services when running webxr and vice versa
Once we move everything over to the webxr crate we can relax the restriction around running both webxr and webvr
r? @asajeffrey
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Remove GStreamer dependencies from UWP app.
Remove all GStreamer dependencies and restore MSVC CRT dependencies to allow running the UWP on non-desktop devices.
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It's impossible to conditionally use a crate based only on cargo features, so
temporarily disable the backend on all Windows builds while we sort out how
to get the UWP builds working again.
WebXr: allow for only a single raf message, until callbacks execute
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See https://github.com/servo/webxr/issues/34
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Stylo: replace product={gecko,servo} with engine={gecko,servo-2013,servo-2020}
Renaming the variable helped make sure I looked at every use.
Also auto-generate relevant parts of `CSSStyleDeclaration.webidl`, to make libscript compile accordingly.
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Use origin of final HTTP response as document origin
I discovered surprising problems when loading pages from http://joshmatthews.net that load same-origin images and try to use them as webgl textures. Since there's a redirect from joshmatthews.net to www.joshmatthews.net, the images are not considered same-origin in Servo because the document stores the origin for the original request's URL, rather than the origin of the response that is received after processing any redirections.
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Avoid panic during shutdown when Blobs exist
Observed when closing the UWP app when https://www.joshmatthews.net/demos/lamp.html is the active document.
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Don't panic if WebGL thread can't be reached during finalization.
Before these changes, when closing a browsing instance displaying WebGL content I would hit a bunch of panics when the WebGL objects are GCed after the WebGL thread has shut down. With these changes shutdown is panic-free.
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Drop webgl main thread data during shutdown.
Before this change I get a panic late in shutdown because we end up trying to communicate with webrender during TLS teardown.
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Fix ARM64 app startup
I missed a DLL in the ARM64 app configuration, so currently it fails to start up. With this change I verified that https://joshmatthews.net/osc.html and https://joshmatthews.net/mp3.html produce audio output on a Windows arm64 laptop.
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- [x] These changes do not require tests because no windows arm64 CI.
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WebXR sessions track draw texture
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Send the XR framebuffer texture to the XR session.
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Various UWP GStreamer improvements
There are a number of positive changes in these commits:
* we successfully load GStreamer plugins in ARM64 UWP builds
* we correctly link the ARM64 ANGLE libraries when appropriate
* it is no longer necessary to manually set the LIB environment variable on Windows
* we automatically download and link against UWP-friendly GStreamer binaries when building with `--uwp`
* the use of vcruntime140.dll, msvcp140.dll and api-ms-win-crt-runtime-l1-1-0.dll in the UWP application has been removed and the build does not repackage them
* the set of base supporting GStreamer DLLs has been expanded to allow the gstlibav plugin to load correctly
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- [x] These changes fix#23742
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