Put some things in the Transferable group

features/offscreen-canvas.yml

@@ -1,7 +1,9 @@
 name: Offscreen canvas
 description: The `OffscreenCanvas` API provides a canvas that can be drawn to off screen, with no dependencies on the DOM, which can be used to run heavy rendering operations inside a worker context.
 spec: https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface
-group: canvas
+group:
+  - canvas
+  - transferable
 caniuse: offscreencanvas
 compat_features:
   - api.HTMLCanvasElement.transferControlToOffscreen

features/streams.yml

@@ -2,7 +2,9 @@ name: Streams
 description: The streams API creates, composes, and consumes continuously generated data.
 spec: https://streams.spec.whatwg.org/
 caniuse: streams
-group: streams
+group:
+  - streams
+  - transferable
 # TODO: Later support
 # - api.ReadableStreamDefaultController
 # - api.ReadableStreamDefaultController.close

features/webcodecs.yml

@@ -2,6 +2,8 @@ name: WebCodecs
 description: The WebCodecs API provides low-level access to individual video frames and chunks of audio samples, for full control over the way media is processed.
 spec: https://w3c.github.io/webcodecs/
 caniuse: webcodecs
+group:
+  - transferable
 status:
   compute_from:
     - api.AudioDecoder.AudioDecoder