In MyTracksMapFragment, remove dependency on onSelectedTrackChanged.

MyTracks/src/com/google/android/apps/mytracks/TrackDetailActivity.java

@@ -470,6 +470,13 @@ public class TrackDetailActivity extends AbstractSendToGoogleActivity
     return trackDataHub;
   }
 
+  /**
+   * Gets the track id.
+   */
+  public long getTrackId() {
+    return trackId;
+  }
+  
   /**
    * Gets the marker id.
    */