Remove most of the things in layout 2020
We keep mostly the query system. There is probably more to delete but
that's a good start I think.
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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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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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Support running WebGL in its own thread or on the main thread.
This is the final missing piece to support WebGL in ANGLE on Windows. ANGLE doesn't support multiple GL contexts on separate threads using the same underlying Direct3d device, so we need to process all GL operations for WebGL on the same thread as the compositor. These changes try to retain enough flexibility to support both approaches so we can get WebGL working on Windows ASAP.
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- [x] These changes fix#23697
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Changed DOMString usages to string in MediaFragmentParser
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Changed `DOMString` usages to `String`/`&str`.
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Update SpiderMonkey bindings for Windows arm64 crash fix
This allows the Windows ARM64 to load web pages without crashing.
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Pass the event loop waker into WebXR
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This PR passes the event loop waker into webxr so it can wake the main thread up when needed.
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update link_called when link function called.
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On call of WebGLProgram::link update link_called to true
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