Added method to get metadata out of the player.

The method passes a list of metadata ids to be retrieved and
a parcel where the metadata records should be appended.

If the list of ids is empty, all the metadata should be returned.
diff --git a/media/libmediaplayerservice/VorbisPlayer.h b/media/libmediaplayerservice/VorbisPlayer.h
index 4024654..040eb36 100644
--- a/media/libmediaplayerservice/VorbisPlayer.h
+++ b/media/libmediaplayerservice/VorbisPlayer.h
@@ -54,6 +54,10 @@
     virtual status_t    setLooping(int loop);
     virtual player_type playerType() { return VORBIS_PLAYER; }
     virtual status_t    invoke(const Parcel& request, Parcel *reply) {return INVALID_OPERATION;}
+    virtual status_t    getMetadata(const SortedVector<MetadataType>& ids,
+                                    Parcel *records)  {
+        return INVALID_OPERATION;
+    }
 
 private:
             status_t    setdatasource(const char *path, int fd, int64_t offset, int64_t length);