Suppress reference equality warning in EventLogger.

We deliberately compare the track group returned by the track selection
with the track group in the parameter to check if the track selection is
referring to this particular track group.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175660909

demos/main/src/main/java/com/google/android/exoplayer2/demo/EventLogger.java

@@ -467,6 +467,9 @@ import java.util.Locale;
     }
   }
 
+  // Suppressing reference equality warning because the track group stored in the track selection
+  // must point to the exact track group object to be considered part of it.
+  @SuppressWarnings("ReferenceEquality")
   private static String getTrackStatusString(TrackSelection selection, TrackGroup group,
       int trackIndex) {
     return getTrackStatusString(selection != null && selection.getTrackGroup() == group