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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- [x] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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Fixes #13376.

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1 files changed, 2 insertions, 1 deletions

diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 9ac91f7078c..e0f65d9f6e1 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -91,6 +91,7 @@ use std::time::{SystemTime, Instant};
 use string_cache::{Atom, Namespace, QualName};
 use style::attr::{AttrIdentifier, AttrValue, LengthOrPercentageOrAuto};
 use style::element_state::*;
+use style::media_queries::MediaQueryList;
 use style::properties::PropertyDeclarationBlock;
 use style::selector_impl::{ElementSnapshot, PseudoElement};
 use style::values::specified::Length;
@@ -367,7 +368,7 @@ no_jsmanaged_fields!(WebGLProgramId);
 no_jsmanaged_fields!(WebGLRenderbufferId);
 no_jsmanaged_fields!(WebGLShaderId);
 no_jsmanaged_fields!(WebGLTextureId);
-
+no_jsmanaged_fields!(MediaQueryList);
 
 impl JSTraceable for Box<ScriptChan + Send> {
     #[inline]