Add a new system service: MediaCommunicationService

Bug: 175511943
Test: MediaCommunicationService can run.
      'adb shell service list' shows the service.
Change-Id: I81a1e11d96d1d30a29760507be6fe04592afcf70
Merged-In: I81a1e11d96d1d30a29760507be6fe04592afcf70
diff --git a/services/Android.bp b/services/Android.bp
index b11a2e8..52b85d0 100644
--- a/services/Android.bp
+++ b/services/Android.bp
@@ -35,6 +35,7 @@
         ":services.usb-sources",
         ":services.voiceinteraction-sources",
         ":services.wifi-sources",
+        ":service-media-s-sources", // TODO (b/177640454)
         ":service-permission-sources",
         ":service-statsd-sources",
     ],