Cleaning up CalcLengthOrPercentage
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We don't really need enum variants in `CalcLengthOrPercentage`. Given that we already have the information (whether it's `vw`, `ch`, etc.) in the struct fields, we could just store `Option<CSSFloat>` there, and modify our `ToCss` implementation a bit.
cc #15061
r? @Manishearth or anyone interested
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gfx: Don't mutate the same point multiple times while translating it …
…to other stacking context space.
I don't know how neither review or a test caught this.
r? @pcwalton or @notriddle
Fixes#15015
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Do not use the script element's line number for external scripts.
This was yielding incorrect line numbers when looking at JS backtraces in gdb.
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The spec says that a script must be immediately prepared whenever "the script element
is connected and a node or document fragment is inserted into the script element,
after any script elements inserted at that time."
Fix the incrmental reflow behavior of text-overflow
This patch allows Servo to incrementally reflow truncated fragments correctly.
* The untruncated version of a fragment is preserved, and when incrementally reflowing, the untruncated version is what gets reflowed. If it needs truncated, it will get truncated again.
* The ellipsis fragments are skipped when incrementally reflowing a line. If it is still needed, it will be recreated.
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Report meaningful line numbers for inline script errors
Rebased from #14661.
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Use the newly stored line as the starting line number when
evaluating JS. This ensures that inline scripts will report
errors with meaningful line numbers.
Webgl blend func tests
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Add a function that validates the conditions for [Constant Color Blend](https://www.khronos.org/registry/webgl/specs/latest/1.0/#CONSTANT_COLOR_BLEND) in the WebGL specs. ./mach run -r tests/wpt/web-platform-tests/webgl/conformance-1.0.3/conformance/misc/webgl-specific.html
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ImageMaps: Implemented support for parsing coord attribute to a shape…
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Image Maps: (Part 1) Implemented support for parsing coord attribute to a shape object.
Implemented a hit_test method to see if a point is within the area. Tests for constructors and hit_test included
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… object in HTMLAreaElement
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Handle properly alternate stylesheet
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Alternate stylesheet are now fetched and then desactivated instead of ignoring them.
I don't know if tests are required to check if the stylesheet is correctly loaded and disabled ?
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Correctly handle unserializable shorthand
get_shorthand_appendable_value doesn't always return a serializable value. This change makes it handle that case correctly.
This change also updates step number in property_value_to_css to reflect the latest spec.
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Fix loss of response type information in Fetch API
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Avoids mapping response types that are distinct according to [the spec](https://fetch.spec.whatwg.org/#concept-response-type) to fewer response types. Also updates test expectations to match that we now pass tests that check the response type.
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Implemented XMLHttpRequest.send(Document)
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r? @KiChjang
`XMLHttpRequest/send-entity-body-document.htm` is not working atm, I get this output:
```
$ ./mach test-wpt tests/wpt/web-platform-tests/XMLHttpRequest/send-entity-body-document.htm
Running 1 tests in web-platform-tests
Ran 1 tests finished in 0.0 seconds.
• 1 ran as expected. 1 tests skipped.
```
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