media::mojom::Remoter and CastRemotingConnector/Sender

chrome/browser/media/router/mojo/media_router.mojom

Index: chrome/browser/media/router/mojo/media_router.mojom
diff --git a/chrome/browser/media/router/mojo/media_router.mojom b/chrome/browser/media/router/mojo/media_router.mojom
index bbf4a3b5c53ee0779987f7cc8c78238c84c620cf..0e6165ce3cfe2db243ad039d3d6a87f029b6c72d 100644
--- a/chrome/browser/media/router/mojo/media_router.mojom
+++ b/chrome/browser/media/router/mojo/media_router.mojom
@@ -4,6 +4,8 @@
 
 module media_router.interfaces;
 
+import "chrome/browser/media/router/mojo/media_remoter.mojom";
+
 // Represents an output sink to which media can be routed.
 struct MediaSink {
   enum IconType {
@@ -380,5 +382,12 @@ interface MediaRouter {
   // |messages|: A non-empty list of messages received.
   OnRouteMessagesReceived(string route_id,
                           array<RouteMessage> messages);
+
+  // Creates a MediaRemotingSession that manages content remoting from the given
+  // |media_source|. Only one session can be created for the same source; and an
+  // attempt to create a second before MediaRemotingSession.Terminate() is
+  // called will cause a null handle to be returned.
+  CreateRemotingSession(string media_source, MediaRemotingProvider provider) =>
+      (MediaRemotingSession? remoting_session);
 };