[RemotePlayback] Keep track of source compatibility and reject prompt() correspondingly

media/blink/renderer_media_player_interface.h

Index: media/blink/renderer_media_player_interface.h
diff --git a/media/blink/renderer_media_player_interface.h b/media/blink/renderer_media_player_interface.h
index d3af5fad043c4453f1f0914e03714eb8d56c7838..0f1bc34885dc375aa0054c4ce0d0c393a0e41e7d 100644
--- a/media/blink/renderer_media_player_interface.h
+++ b/media/blink/renderer_media_player_interface.h
@@ -17,6 +17,10 @@
 #include "ui/gfx/geometry/rect_f.h"
 #include "url/gurl.h"
 
+namespace blink {
+enum class WebRemotePlaybackAvailability;
+}
+
 // Dictates which type of media playback is being initialized.
 enum MediaPlayerHostMsg_Initialize_Type {
   MEDIA_PLAYER_TYPE_URL,
@@ -54,7 +58,8 @@ class RendererMediaPlayerInterface {
   virtual void OnDidExitFullscreen() = 0;
   virtual void OnMediaPlayerPlay() = 0;
   virtual void OnMediaPlayerPause() = 0;
-  virtual void OnRemoteRouteAvailabilityChanged(bool routes_available) = 0;
+  virtual void OnRemoteRouteAvailabilityChanged(
+      blink::WebRemotePlaybackAvailability availability) = 0;
 
   // Getters of playback state.
   virtual bool paused() const = 0;