Temporal fix to allow proper library shrinking.

PiperOrigin-RevId: 492579961

library/extractor/src/main/java/com/google/android/exoplayer2/extractor/DefaultExtractorsFactory.java

@@ -128,13 +128,13 @@ public final class DefaultExtractorsFactory implements ExtractorsFactory {
   private @Mp3Extractor.Flags int mp3Flags;
   private @Mp3Extractor.Flags int mp3Flags;
   private @TsExtractor.Mode int tsMode;
   private @TsExtractor.Mode int tsMode;
   private @DefaultTsPayloadReaderFactory.Flags int tsFlags;
   private @DefaultTsPayloadReaderFactory.Flags int tsFlags;
-  private ImmutableList<Format> tsSubtitleFormats;
+  // TODO (b/260245332): Initialize tsSubtitleFormats in constructor once shrinking bug is fixed.
+  @Nullable private ImmutableList<Format> tsSubtitleFormats;
   private int tsTimestampSearchBytes;
   private int tsTimestampSearchBytes;
 
 
   public DefaultExtractorsFactory() {
   public DefaultExtractorsFactory() {
     tsMode = TsExtractor.MODE_SINGLE_PMT;
     tsMode = TsExtractor.MODE_SINGLE_PMT;
     tsTimestampSearchBytes = TsExtractor.DEFAULT_TIMESTAMP_SEARCH_BYTES;
     tsTimestampSearchBytes = TsExtractor.DEFAULT_TIMESTAMP_SEARCH_BYTES;
-    tsSubtitleFormats = ImmutableList.of();
   }
   }
 
 
   /**
   /**
@@ -432,6 +432,9 @@ public final class DefaultExtractorsFactory implements ExtractorsFactory {
         extractors.add(new PsExtractor());
         extractors.add(new PsExtractor());
         break;
         break;
       case FileTypes.TS:
       case FileTypes.TS:
+        if (tsSubtitleFormats == null) {
+          tsSubtitleFormats = ImmutableList.of();
+        }
         extractors.add(
         extractors.add(
             new TsExtractor(
             new TsExtractor(
                 tsMode,
                 tsMode,