webgl: Implement the pending texImage2D overload, and add more validation
This is a large-ish refactor of the Texture2D code, but it should be
easier to read and of course more correct.
I tried to annotate every error condition with a spec paragraph.
I made just a reftest to ensure this works as intended, since I expect #10373 to land pretty soon.
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We don't really need two levels of abstraction for every element in the
DisplayList. This simplifies the complexity of the data structure in
preparation for providing documentation and properly handling scrolling
roots.
Setting current color to black if canvas is not rendered in document
Fixes#10601
The change seems deceptively easy, I hope I am not missing anything...
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Add unit tests skeleton for the time profiler
This commit adds a test crate for the time profiler to `tests/unit/profile`. The
only unit test contained in this crate is a smoke test that the time profiler
thread can be created and destroyed. It serves as a place for adding new tests
in the future.
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The spec has changed a bit since the servo implementation. We still need to alias
sideways-right to sideways and add other writing modes, but we can do that later.
Remove some Emacs & Vim modelines
This might be a bad idea, especially on the webidl side. However, we started talking about the idea that modelines are a lint error (https://github.com/servo/servo/issues/10719), and these changes would be required before enabling a modeline lint.
If it bitrots, it's easy to recreate with
```
find * -type f -exec sed '/- Mode:/d' -i {} +
find * -type f -exec sed '/ vim:/d' -i {} +
git checkout -- python/tidy/servo_tidy/tidy.py
git checkout -- python/tidy/servo_tidy_tests/spec.webidl
git commit -a
```
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This is a new attempt of #10586, after Simon Sapin's great cleanups in #10749 has landed. I have adjusted the changes to the new structure that was introduced, and also only done a few of the longhand ones. Will certainly continue on this as soon as we have a basic agreement that this style is reasonable.
