Add missing @Nullable to equals implementations.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=195947382

extensions/cast/src/main/java/com/google/android/exoplayer2/ext/cast/CastTimeline.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.ext.cast;
 
+import android.support.annotation.Nullable;
 import android.util.SparseIntArray;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Timeline;
@@ -110,7 +111,7 @@ import java.util.Map;
   // equals and hashCode implementations.
 
   @Override
-  public boolean equals(Object other) {
+  public boolean equals(@Nullable Object other) {
     if (this == other) {
       return true;
     } else if (!(other instanceof CastTimeline)) {

extensions/okhttp/src/main/java/com/google/android/exoplayer2/ext/okhttp/OkHttpDataSource.java

@@ -170,7 +170,7 @@ public class OkHttpDataSource implements HttpDataSource {
 
     // Check for a valid response code.
     if (!response.isSuccessful()) {
-      Map<String, List<String>> headers = response.headers().toMultimap();
+      Map<String, List<String>> headers = request.headers().toMultimap();
       closeConnectionQuietly();
       InvalidResponseCodeException exception = new InvalidResponseCodeException(
           responseCode, headers, dataSpec);

library/core/src/main/java/com/google/android/exoplayer2/PlaybackParameters.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Assertions;
 
 /**
@@ -87,7 +88,7 @@ public final class PlaybackParameters {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/RendererConfiguration.java

@@ -15,6 +15,8 @@
  */
 package com.google.android.exoplayer2;
 
+import android.support.annotation.Nullable;
+
 /**
  * The configuration of a {@link Renderer}.
  */
@@ -41,7 +43,7 @@ public final class RendererConfiguration {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/SeekParameters.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Assertions;
 
 /**
@@ -71,7 +72,7 @@ public final class SeekParameters {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/audio/AudioAttributes.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.audio;
 
 import android.annotation.TargetApi;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 
 /**
@@ -119,7 +120,7 @@ public final class AudioAttributes {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/audio/AudioCapabilities.java

@@ -22,6 +22,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.media.AudioFormat;
 import android.media.AudioManager;
+import android.support.annotation.Nullable;
 import java.util.Arrays;
 
 /**
@@ -96,7 +97,7 @@ public final class AudioCapabilities {
   }
 
   @Override
-  public boolean equals(Object other) {
+  public boolean equals(@Nullable Object other) {
     if (this == other) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/drm/DrmInitData.java

@@ -195,7 +195,7 @@ public final class DrmInitData implements Comparator<SchemeData>, Parcelable {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }
@@ -338,7 +338,7 @@ public final class DrmInitData implements Comparator<SchemeData>, Parcelable {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (!(obj instanceof SchemeData)) {
         return false;
       }

library/core/src/main/java/com/google/android/exoplayer2/extractor/SeekMap.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.extractor;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.util.Assertions;
 
@@ -92,7 +93,7 @@ public interface SeekMap {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }

library/core/src/main/java/com/google/android/exoplayer2/extractor/SeekPoint.java

@@ -15,6 +15,8 @@
  */
 package com.google.android.exoplayer2.extractor;
 
+import android.support.annotation.Nullable;
+
 /** Defines a seek point in a media stream. */
 public final class SeekPoint {
 
@@ -42,7 +44,7 @@ public final class SeekPoint {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/extractor/TrackOutput.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.extractor;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.util.ParsableByteArray;
@@ -69,7 +70,7 @@ public interface TrackOutput {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecUtil.java

@@ -639,7 +639,7 @@ public final class MediaCodecUtil {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }

library/core/src/main/java/com/google/android/exoplayer2/metadata/Metadata.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import java.util.Arrays;
 import java.util.List;
 
@@ -76,7 +77,7 @@ public final class Metadata implements Parcelable {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/emsg/EventMessage.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.emsg;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
@@ -104,7 +105,7 @@ public final class EventMessage implements Metadata.Entry {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/ApicFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
 
@@ -49,7 +50,7 @@ public final class ApicFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/BinaryFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import java.util.Arrays;
 
 /**
@@ -37,7 +38,7 @@ public final class BinaryFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/ChapterFrame.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
@@ -80,7 +81,7 @@ public final class ChapterFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/ChapterTocFrame.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
 
@@ -70,7 +71,7 @@ public final class ChapterTocFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/CommentFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 
 /**
@@ -45,7 +46,7 @@ public final class CommentFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/GeobFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
 
@@ -49,7 +50,7 @@ public final class GeobFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/PrivFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 import java.util.Arrays;
 
@@ -43,7 +44,7 @@ public final class PrivFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/TextInformationFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 
 /**
@@ -40,7 +41,7 @@ public final class TextInformationFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/UrlLinkFrame.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.metadata.id3;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.util.Util;
 
 /**
@@ -40,7 +41,7 @@ public final class UrlLinkFrame extends Id3Frame {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/offline/DownloadAction.java

@@ -140,7 +140,7 @@ public abstract class DownloadAction {
       DownloaderConstructorHelper downloaderConstructorHelper);
 
   @Override
-  public boolean equals(Object o) {
+  public boolean equals(@Nullable Object o) {
     if (o == null || getClass() != o.getClass()) {
       return false;
     }

library/core/src/main/java/com/google/android/exoplayer2/offline/ProgressiveDownloadAction.java

@@ -84,7 +84,7 @@ public final class ProgressiveDownloadAction extends DownloadAction {
   }
 
   @Override
-  public boolean equals(Object o) {
+  public boolean equals(@Nullable Object o) {
     if (this == o) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/offline/SegmentDownloadAction.java

@@ -112,7 +112,7 @@ public abstract class SegmentDownloadAction<K extends Comparable<K>> extends Dow
   protected abstract void writeKey(DataOutputStream output, K key) throws IOException;
 
   @Override
-  public boolean equals(Object o) {
+  public boolean equals(@Nullable Object o) {
     if (this == o) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/source/MediaSource.java

@@ -145,7 +145,7 @@ public interface MediaSource {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }

library/core/src/main/java/com/google/android/exoplayer2/source/TrackGroup.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.source;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.util.Assertions;
@@ -96,7 +97,7 @@ public final class TrackGroup implements Parcelable {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/source/TrackGroupArray.java

@@ -17,6 +17,7 @@ package com.google.android.exoplayer2.source;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import java.util.Arrays;
 
@@ -98,7 +99,7 @@ public final class TrackGroupArray implements Parcelable {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.trackselection;
 
 import android.os.SystemClock;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.source.TrackGroup;
@@ -183,7 +184,7 @@ public abstract class BaseTrackSelection implements TrackSelection {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/trackselection/DefaultTrackSelector.java

@@ -20,6 +20,7 @@ import android.graphics.Point;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Pair;
 import android.util.SparseArray;
@@ -771,7 +772,7 @@ public class DefaultTrackSelector extends MappingTrackSelector {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }
@@ -992,7 +993,7 @@ public class DefaultTrackSelector extends MappingTrackSelector {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }
@@ -2020,7 +2021,7 @@ public class DefaultTrackSelector extends MappingTrackSelector {
     }
 
     @Override
-    public boolean equals(Object o) {
+    public boolean equals(@Nullable Object o) {
       if (this == o) {
         return true;
       }
@@ -2074,7 +2075,7 @@ public class DefaultTrackSelector extends MappingTrackSelector {
     }
 
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
       if (this == obj) {
         return true;
       }

library/core/src/main/java/com/google/android/exoplayer2/trackselection/TrackSelectionArray.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.trackselection;
 
+import android.support.annotation.Nullable;
 import java.util.Arrays;
 
 /** An array of {@link TrackSelection}s. */
@@ -64,7 +65,7 @@ public final class TrackSelectionArray {
   }
 
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/CachedContent.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.upstream.cache;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.upstream.cache.Cache.CacheException;
 import com.google.android.exoplayer2.util.Assertions;
 import java.io.DataInputStream;
@@ -236,7 +237,7 @@ import java.util.TreeSet;
   }
 
   @Override
-  public boolean equals(Object o) {
+  public boolean equals(@Nullable Object o) {
     if (this == o) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/DefaultContentMetadata.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.upstream.cache;
 
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
@@ -131,7 +132,7 @@ public final class DefaultContentMetadata implements ContentMetadata {
   }
 
   @Override
-  public boolean equals(Object o) {
+  public boolean equals(@Nullable Object o) {
     if (this == o) {
       return true;
     }

library/core/src/main/java/com/google/android/exoplayer2/video/ColorInfo.java

@@ -17,10 +17,10 @@ package com.google.android.exoplayer2.video;
 
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.util.Util;
-
 import java.util.Arrays;
 
 /**
@@ -85,7 +85,7 @@ public final class ColorInfo implements Parcelable {
 
   // Parcelable implementation.
   @Override
-  public boolean equals(Object obj) {
+  public boolean equals(@Nullable Object obj) {
     if (this == obj) {
       return true;
     }

library/core/src/test/java/com/google/android/exoplayer2/analytics/AnalyticsCollectorTest.java

@@ -846,7 +846,7 @@ public final class AnalyticsCollectorTest {
     }
 
     @Override
-    public boolean equals(Object other) {
+    public boolean equals(@Nullable Object other) {
       if (!(other instanceof EventWindowAndPeriodId)) {
         return false;
       }

library/ui/src/main/res/values-de/strings.xml

@@ -21,7 +21,7 @@
   <string name="exo_track_selection_title_video">Video</string>
   <string name="exo_track_selection_title_audio">Audio</string>
   <string name="exo_track_selection_title_text">Text</string>
-  <string name="exo_track_selection_none">Keiner</string>
+  <string name="exo_track_selection_none">Ohne</string>
   <string name="exo_track_selection_auto">Automatisch</string>
   <string name="exo_track_unknown">Unbekannt</string>
   <string name="exo_track_resolution">%1$d × %2$d</string>
@@ -31,5 +31,5 @@
   <string name="exo_track_surround_5_point_1">5.1-Surround-Sound</string>
   <string name="exo_track_surround_7_point_1">7.1-Surround-Sound</string>
   <string name="exo_track_bitrate">%1$.2f Mbit/s</string>
-  <string name="exo_item_list">%1$s und %2$s</string>
+  <string name="exo_item_list">%1$s, %2$s</string>
 </resources>