Insertable streams is worth prototyping

Closes mozilla#330.

activities.json

@@ -1268,6 +1268,19 @@
     "title": "Web Thing API",
     "url": "https://iot.mozilla.org/wot/"
   },
+  {
+    "ciuName": null,
+    "description": "This API defines an API surface for manipulating the bits on MediaStreamTracks being sent via an RTCPeerConnection.",
+    "id": "webrtc-insertable-streams",
+    "mdnUrl": null,
+    "mozBugUrl": null,
+    "mozPosition": "worth prototyping",
+    "mozPositionDetail": "This approach provides sites a way to offer a form of end-to-end protection for media, especially in those very common cases where media for group sessions is managed by a central service. The proposed API, together with the SFrame proposal, provides sites the ability to limit the information that is exposed to the central service. Mozilla would prefer to include better key management than this approach proposes, perhaps using <a href=\"https://datatracker.ietf.org/doc/html/draft-ietf-mls-architecture\">MLS</a>, which might guarantee certain security and privacy gains for users. However, we recognizes that this is not yet feasible and this API can provide security and privacy gains if carefully applied by sites.",
+    "mozPositionIssue": null,
+    "org": "W3C",
+    "title": "WebRTC Insertable Media using Streams",
+    "url": "https://w3c.github.io/webrtc-insertable-streams/"
+  },
   {
     "ciuName": "",
     "description": "Use cases about providing guarantees to users about the privacy of their WebRTC videoconferencing when the servers are not trusted but the JavaScript is.",