Re: [mediacapture-handle] Expose a MessagePort using Capture Handle (#70)

I like the minimal API in on the controller, assuming `postMessage` is modeled on the one from [Window]( 
partial interface CaptureController {
  undefined postMessage(any message, USVString targetOrigin, optional sequence<object> transfer = []);
  undefined postMessage(any message, optional WindowPostMessageOptions options = {});
That way, apps have `targetOrigin` to deal with navigation in the capturee.

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Received on Thursday, 2 February 2023 16:38:40 UTC