Add @webref/idl dependency

Signed-off-by: Victor Porof <victorporof@chromium.org>
Bug: 1325812
Change-Id: I044170880d20ce0402062755787cccafd63c6a42
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3695370
Reviewed-by: Mathias Bynens <mathias@chromium.org>
diff --git a/node_modules/@webref/idl/css-highlight-api.idl b/node_modules/@webref/idl/css-highlight-api.idl
new file mode 100644
index 0000000..f3c6b2e
--- /dev/null
+++ b/node_modules/@webref/idl/css-highlight-api.idl
@@ -0,0 +1,27 @@
+// GENERATED CONTENT - DO NOT EDIT
+// Content was automatically extracted by Reffy into webref
+// (https://github.com/w3c/webref)
+// Source: CSS Custom Highlight API Module Level 1 (https://drafts.csswg.org/css-highlight-api-1/)
+
+enum HighlightType {
+  "highlight",
+  "spelling-error",
+  "grammar-error"
+};
+
+[Exposed=Window]
+interface Highlight {
+  constructor(AbstractRange... initialRanges);
+  setlike<AbstractRange>;
+  attribute long priority;
+  attribute HighlightType type;
+};
+
+partial namespace CSS {
+  readonly attribute HighlightRegistry highlights;
+};
+
+[Exposed=Window]
+interface HighlightRegistry {
+  maplike<DOMString, Highlight>;
+};