Remove all RawCC references from media3

RawCC is a Google-internal subtitle format that is no longer directly
supported by this library (since https://github.com/androidx/media/commit/4f616d60034e13e2236f321cbb3187ac92a2709d).

PiperOrigin-RevId: 520591591

api.txt

@@ -486,7 +486,7 @@ package androidx.media3.common {
     field public static final String APPLICATION_MP4VTT = "application/x-mp4-vtt";
     field public static final String APPLICATION_MPD = "application/dash+xml";
     field public static final String APPLICATION_PGS = "application/pgs";
-    field public static final String APPLICATION_RAWCC = "application/x-rawcc";
+    field @Deprecated public static final String APPLICATION_RAWCC = "application/x-rawcc";
     field public static final String APPLICATION_RTSP = "application/x-rtsp";
     field public static final String APPLICATION_SS = "application/vnd.ms-sstr+xml";
     field public static final String APPLICATION_SUBRIP = "application/x-subrip";

libraries/common/src/main/java/androidx/media3/common/MimeTypes.java

@@ -130,7 +130,12 @@ public final class MimeTypes {
   public static final String APPLICATION_TX3G = BASE_TYPE_APPLICATION + "/x-quicktime-tx3g";
   public static final String APPLICATION_MP4VTT = BASE_TYPE_APPLICATION + "/x-mp4-vtt";
   public static final String APPLICATION_MP4CEA608 = BASE_TYPE_APPLICATION + "/x-mp4-cea-608";
-  public static final String APPLICATION_RAWCC = BASE_TYPE_APPLICATION + "/x-rawcc";
+  /**
+   * @deprecated RawCC is a Google-internal subtitle format that isn't supported by this version of
+   *     Media3. There is no replacement for this value.
+   */
+  @Deprecated public static final String APPLICATION_RAWCC = BASE_TYPE_APPLICATION + "/x-rawcc";
+
   public static final String APPLICATION_VOBSUB = BASE_TYPE_APPLICATION + "/vobsub";
   public static final String APPLICATION_PGS = BASE_TYPE_APPLICATION + "/pgs";
   @UnstableApi public static final String APPLICATION_SCTE35 = BASE_TYPE_APPLICATION + "/x-scte35";

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/chunk/MediaParserChunkExtractor.java

@@ -32,7 +32,6 @@ import androidx.media3.common.C;
 import androidx.media3.common.Format;
 import androidx.media3.common.MimeTypes;
 import androidx.media3.common.util.Assertions;
-import androidx.media3.common.util.Log;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.common.util.Util;
 import androidx.media3.exoplayer.analytics.PlayerId;
@@ -69,8 +68,7 @@ public final class MediaParserChunkExtractor implements ChunkExtractor {
           return new MediaParserChunkExtractor(
               primaryTrackType, format, closedCaptionFormats, playerId);
         } else {
-          // This is either RAWCC (unsupported) or a text track that does not require an extractor.
-          Log.w(TAG, "Ignoring an unsupported text track.");
+          // This is a text track that does not require an extractor.
           return null;
         }
       };

libraries/extractor/src/main/java/androidx/media3/extractor/rawcc/package-info.java

-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-@NonNullApi
-package androidx.media3.extractor.rawcc;
-
-import androidx.media3.common.util.NonNullApi;