Auto merge of #13453 - metajack:media-query-list, r=jdm

Implement matchMedia and MediaQueryList

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #13376 (github issue number if applicable).

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Fixes #13376.

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components/servo/Cargo.lock

@@ -1976,6 +1976,7 @@ dependencies = [
  "smallvec 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "string_cache 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "style 0.0.1",
+ "style_traits 0.0.1",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "tinyfiledialogs 0.1.0 (git+https://github.com/jdm/tinyfiledialogs)",
  "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",