Add two MP4 samples with metadata

The first has a string genre, and various other values set, generated
from `sample.mp4` with the command below [1].

The second has a numeric genre, to test `gnre` atom parsing. This
parsing is currently broken, the fix is in a follow-up change. This
file was also generated from `sample.mp4` with the command below [2].

This change also includes `CommentFrame.text` in its `toString`
representation, otherwise there's no difference between e.g. different
levels of `ITUNESADVISORY` in the extractor dump files.

Issue: #1305

-----

[1]

```shell
$ AP_PADDING="DEFAULT_PAD=0" \
    AtomicParsley sample.mp4 \
    --artist "Test Artist" \
    --album "Test Album" \
    --tracknum 2/12 \
    --disk 2/3 \
    --year 2024  \
    --genre "Gorpcore" \
    --bpm 120 \
    --compilation true \
    --advisory clean \
    --gapless true \
    --sortOrder artist "Sorting Artist" \
    --sortOrder album "Sorting Album" \
    --preventOptimizing \
    -o sample_with_metadata.mp4
```

[2]
```shell
$ AP_PADDING="DEFAULT_PAD=0" \
    AtomicParsley sample.mp4 \
    --genre "Metal" \
    --preventOptimizing \
    -o sample_with_numeric_genre.mp4
```

PiperOrigin-RevId: 628345458

libraries/exoplayer/src/test/java/androidx/media3/exoplayer/e2etest/Mp4PlaybackTest.java

@@ -62,6 +62,8 @@ public static ImmutableList<String> mediaSamples() {
         "sample_fragmented_sei.mp4",
         "sample_mdat_too_long.mp4",
         "sample.mp4",
+        "sample_with_metadata.mp4",
+        "sample_with_numeric_genre.mp4",
         "sample_opus_fragmented.mp4",
         "sample_opus.mp4",
         "sample_partially_fragmented.mp4",

libraries/extractor/src/main/java/androidx/media3/extractor/metadata/id3/CommentFrame.java

@@ -72,7 +72,7 @@ public int hashCode() {
 
   @Override
   public String toString() {
-    return id + ": language=" + language + ", description=" + description;
+    return id + ": language=" + language + ", description=" + description + ", text=" + text;
   }
 
   // Parcelable implementation.

libraries/extractor/src/test/java/androidx/media3/extractor/mp4/Mp4ExtractorParameterizedTest.java

@@ -64,6 +64,22 @@ public void mp4SampleWithSlowMotionMetadata() throws Exception {
         simulationConfig);
   }
 
+  @Test
+  public void mp4SampleWithMetadata() throws Exception {
+    ExtractorAsserts.assertBehavior(
+        getExtractorFactory(subtitlesParsedDuringExtraction),
+        "media/mp4/sample_with_metadata.mp4",
+        simulationConfig);
+  }
+
+  @Test
+  public void mp4SampleWithNumericGenre() throws Exception {
+    ExtractorAsserts.assertBehavior(
+        getExtractorFactory(subtitlesParsedDuringExtraction),
+        "media/mp4/sample_with_numeric_genre.mp4",
+        simulationConfig);
+  }
+
   /**
    * Test case for https://github.com/google/ExoPlayer/issues/6774. The sample file contains an mdat
    * atom whose size indicates that it extends 8 bytes beyond the end of the file.

libraries/test_data/src/test/assets/extractordumps/mp3/bear-id3-enabled.0.dump

@@ -16,7 +16,7 @@ track 0:
     sampleRate = 48000
     encoderDelay = 576
     encoderPadding = 576
-    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
+    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, text=Test comment, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
   sample 0:
     time = 0
     flags = 1

libraries/test_data/src/test/assets/extractordumps/mp3/bear-id3-enabled.1.dump

@@ -16,7 +16,7 @@ track 0:
     sampleRate = 48000
     encoderDelay = 576
     encoderPadding = 576
-    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
+    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, text=Test comment, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
   sample 0:
     time = 943000
     flags = 1

libraries/test_data/src/test/assets/extractordumps/mp3/bear-id3-enabled.2.dump

@@ -16,7 +16,7 @@ track 0:
     sampleRate = 48000
     encoderDelay = 576
     encoderPadding = 576
-    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
+    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, text=Test comment, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
   sample 0:
     time = 1879000
     flags = 1

libraries/test_data/src/test/assets/extractordumps/mp3/bear-id3-enabled.3.dump

@@ -16,5 +16,5 @@ track 0:
     sampleRate = 48000
     encoderDelay = 576
     encoderPadding = 576
-    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
+    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, text=Test comment, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
 tracksEnded = true

libraries/test_data/src/test/assets/extractordumps/mp3/bear-id3-enabled.unknown_length.dump

@@ -16,7 +16,7 @@ track 0:
     sampleRate = 48000
     encoderDelay = 576
     encoderPadding = 576
-    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
+    metadata = entries=[TIT2: description=null: values=[Test title], TPE1: description=null: values=[Test Artist], TALB: description=null: values=[Test Album], TXXX: description=Test description: values=[Test user info], COMM: language=eng, description=Test description, text=Test comment, WXXX: url=Test URL, TSSE: description=null: values=[Lavf58.29.100], MLLT, PRIV: owner=test@gmail.com, UNKN, GEOB: mimeType=test/mime, filename=Testfilename.txt, description=Test description, CHAP, CHAP, CTOC, APIC: mimeType=image/jpeg, description=Test description]
   sample 0:
     time = 0
     flags = 1