Bug 1593158 [wpt PR 20042] - Update interfaces/media-capabilities.idl…

…, a=testonly

Automatic update from web-platform-tests
Update interfaces/media-capabilities.idl (#20042)

Source: https://github.com/tidoust/reffy-reports/blob/f08e36d/ed/idl/media-capabilities.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/605796547
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wpt-commits: ff29530cb836b0d8f1a1845cb6fc3e35b15c90ef
wpt-pr: 20042

Differential Revision: https://phabricator.services.mozilla.com/D53599

UltraBlame original commit: 707bae8b42e2dea3325183dd3c5a92d38adb1654

testing/web-platform/tests/interfaces/media-capabilities.idl

@@ -68,18 +68,21 @@ dictionary AudioConfiguration {
 dictionary MediaCapabilitiesKeySystemConfiguration {
     required DOMString keySystem;
     DOMString initDataType = "";
-    DOMString audioRobustness = "";
-    DOMString videoRobustness = "";
     MediaKeysRequirement distinctiveIdentifier = "optional";
     MediaKeysRequirement persistentState = "optional";
     sequence<DOMString> sessionTypes;
+    KeySystemTrackConfiguration audio;
+    KeySystemTrackConfiguration video;
+  };
+
+dictionary KeySystemTrackConfiguration {
+    DOMString robustness = "";
   };
 
 dictionary MediaCapabilitiesInfo {
   required boolean supported;
   required boolean smooth;
   required boolean powerEfficient;
-
 };
 
 dictionary MediaCapabilitiesDecodingInfo : MediaCapabilitiesInfo {