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At the moment, worklets are always exposed, even though their spec is still a draft. This PR hides them behind a pref.
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#17680.
- [X] These changes do not require tests because the existing worklet tests do the job.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 92eeec297bb14f08873aecc04ca3734a37c0478f
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Implement the rendering context for paint worklets. They really paint things now!
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because the existing reftest now passes
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Source-Repo: https://github.com/servo/servo
Source-Revision: a9fea0653a25d5f26f1115203015c5cf699f5227
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Implemented the "invoke a paint callback" functionality of paint worklets (https://drafts.css-houdini.org/css-paint-api/#invoke-a-paint-callback).
This PR does not implement the 2D rendering context, and just generates a placeholder image.
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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 do not require tests because we can't write reftests until we have 2D rendering contexts implemented.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 39da6d46742d67c94f9614212af6dabd6124e5b3
