We were working around the lack of alias support during parsing in
TransitionProperty by doing a Gecko lookup. That's a hack and is now gone.
Bug: 1419695
Reviewed-by: xidorn
MozReview-Commit-ID: EptUvJNTrZr
Fixed panic due to GC while parsing
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Don't trace the incomplete parsing contexts during GC, as parsing triggers GC while holding a mutable borrow of the context.
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Refactor draw_image and make draw_image_self call draw_image in canvas.
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Update WPT upstream sync metadata.
This is the result of running `./mach update-wpt --upstream` with appropriate credentials.
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Respect the source rectangle when drawing a canvas to another canvas.
This allows us to run the three.js examples without panicking, since they use self-drawing canvases to scroll the FPS graph.
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Make a doc URL a clickable link
Made a URL in the docs of net::http_cache a clickable link.
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Support cloning steps for textarea/input
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Change to pip dependency install invocation during virtualenv setup in build
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Fix for https://github.com/servo/servo/issues/20990
In short, the pip invocation was causing my build on OSX to break. Using `python -m pip` in place of `pip` when setting up the virtual environment fixes the environment setup failure and allows the build to proceed.
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The sys.platform check in need_pip_upgrade was doing effectively the same pip invocation regardless of what
platform we were evaluating to.
Additionally, removed some duplicate definitions of the python variable which was already in scope
higher up in the function.
Update dependencies to use new_debug_unreachable
Because reem/rust-debug-unreachable#6 makes `debug_unreachable` enable debug checks even in release builds since Rust 1.0.
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Use reference frames explicitly for fixed positioning
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Implement read methods on FileReaderSync
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Implemented the read methods on the FileReaderSync struct according to https://w3c.github.io/FileAPI/#dfn-FileReaderSync
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