Make ElementaryStreamReader's public

This allows building a TsPayloadReader.Factory without
having to wrap the default one.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=149004102

library/src/main/java/com/google/android/exoplayer2/extractor/ts/Ac3Reader.java

@@ -27,7 +27,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
 /**
  * Parses a continuous (E-)AC-3 byte stream and extracts individual samples.
  */
-/* package */ final class Ac3Reader implements ElementaryStreamReader {
+public final class Ac3Reader implements ElementaryStreamReader {
 
   private static final int STATE_FINDING_SYNC = 0;
   private static final int STATE_READING_HEADER = 1;

library/src/main/java/com/google/android/exoplayer2/extractor/ts/AdtsReader.java

@@ -33,7 +33,7 @@ import java.util.Collections;
 /**
  * Parses a continuous ADTS byte stream and extracts individual frames.
  */
-/* package */ final class AdtsReader implements ElementaryStreamReader {
+public final class AdtsReader implements ElementaryStreamReader {
 
   private static final String TAG = "AdtsReader";
 

library/src/main/java/com/google/android/exoplayer2/extractor/ts/DtsReader.java

@@ -26,7 +26,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
 /**
  * Parses a continuous DTS byte stream and extracts individual samples.
  */
-/* package */ final class DtsReader implements ElementaryStreamReader {
+public final class DtsReader implements ElementaryStreamReader {
 
   private static final int STATE_FINDING_SYNC = 0;
   private static final int STATE_READING_HEADER = 1;

library/src/main/java/com/google/android/exoplayer2/extractor/ts/H262Reader.java

@@ -30,7 +30,7 @@ import java.util.Collections;
 /**
  * Parses a continuous H262 byte stream and extracts individual frames.
  */
-/* package */ final class H262Reader implements ElementaryStreamReader {
+public final class H262Reader implements ElementaryStreamReader {
 
   private static final int START_PICTURE = 0x00;
   private static final int START_SEQUENCE_HEADER = 0xB3;

library/src/main/java/com/google/android/exoplayer2/extractor/ts/H264Reader.java

@@ -33,7 +33,7 @@ import java.util.List;
 /**
  * Parses a continuous H264 byte stream and extracts individual frames.
  */
-/* package */ final class H264Reader implements ElementaryStreamReader {
+public final class H264Reader implements ElementaryStreamReader {
 
   private static final int NAL_UNIT_TYPE_SEI = 6; // Supplemental enhancement information
   private static final int NAL_UNIT_TYPE_SPS = 7; // Sequence parameter set

library/src/main/java/com/google/android/exoplayer2/extractor/ts/H265Reader.java

@@ -30,7 +30,7 @@ import java.util.Collections;
 /**
  * Parses a continuous H.265 byte stream and extracts individual frames.
  */
-/* package */ final class H265Reader implements ElementaryStreamReader {
+public final class H265Reader implements ElementaryStreamReader {
 
   private static final String TAG = "H265Reader";
 

library/src/main/java/com/google/android/exoplayer2/extractor/ts/Id3Reader.java

@@ -27,7 +27,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
 /**
  * Parses ID3 data and extracts individual text information frames.
  */
-/* package */ final class Id3Reader implements ElementaryStreamReader {
+public final class Id3Reader implements ElementaryStreamReader {
 
   private static final String TAG = "Id3Reader";
 

library/src/main/java/com/google/android/exoplayer2/extractor/ts/MpegAudioReader.java

@@ -26,7 +26,7 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
 /**
  * Parses a continuous MPEG Audio byte stream and extracts individual frames.
  */
-/* package */ final class MpegAudioReader implements ElementaryStreamReader {
+public final class MpegAudioReader implements ElementaryStreamReader {
 
   private static final int STATE_FINDING_HEADER = 0;
   private static final int STATE_READING_HEADER = 1;