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This is a follow up for #13740, so r? @jdm
The first patch enables JSON serialization for flexbox flows, the second one fixed format incompatibilities for the layout viewer.
The 3rd and 4th patches are just layout viewer UI enhancements, we could split that to a spearate PR if you prefer.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 58fec2f05a21eb69899c8ec21e4b95000cfed2f2
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Add a `LogicalMargin::start_end()` method that receives a `Direction' parameter. This is useful for some layout that is symmetric in inline and block directions, like flexbox.
Part of #14123.
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r? @SimonSapin
Source-Repo: https://github.com/servo/servo
Source-Revision: d16f3124640be647b4ed67cc4a68cebd55cdb7cc
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Migrated the trace-layout code from old `rustc-serialize` to `serde_json`. This will help us iterate faster on the layout viewer (#13432), #13436, #12675 and fix#12936.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 1c26f44cbb23e7da3b9d63f0223c8d5d43eec958
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The bulk of this is adding cargo features to make derived implementations of `heapsize` and `serde` traits optional.
"Almost" because `std::intrinsics::discriminant_value` is currently unstable and doesn’t have any stable replacement that I know of. For now, this PR conditionally replaces it with `unimplemented!()`.
r? @nox
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Source-Repo: https://github.com/servo/servo
Source-Revision: 0fb5d634a007f3d0424f95569ac3f83d500d054c
Add the `scrollWidth` and `scrollHeight` extensions to the element interface. My goal was to create a method that encompassed getting `scrollWidth`, `scrollHeight`, `scrollTop`, and `scrollLeft`.
I also noted that `clientHeight` and `clientWidth` to not handle the root element and the body element correctly.
Source-Repo: https://github.com/servo/servo
Source-Revision: 7ff7932a8cb15c42a436958e953cc904ba7a0bd8
