Update PlayerWrapper methods to return void where possible

Suggested during the review of https://github.com/google/ExoPlayer/commit/437d1b6e9ae1e085583b3ab8e8d686d1eea32b65

This keeps the Runnable -> Callable<Boolean> conversion encapsulated
inside SessionPlayerConnector which makes it clearer why it's needed.

PiperOrigin-RevId: 321553744

extensions/media2/src/main/java/com/google/android/exoplayer2/ext/media2/PlayerWrapper.java

@@ -305,11 +305,10 @@ import java.util.List;
     }
   }
 
-  public boolean setAudioAttributes(AudioAttributesCompat audioAttributes) {
+  public void setAudioAttributes(AudioAttributesCompat audioAttributes) {
     Player.AudioComponent audioComponent = Assertions.checkStateNotNull(player.getAudioComponent());
     audioComponent.setAudioAttributes(
         Utils.getAudioAttributes(audioAttributes), /* handleAudioFocus= */ true);
-    return true;
   }
 
   public AudioAttributesCompat getAudioAttributes() {
@@ -318,9 +317,8 @@ import java.util.List;
         audioComponent != null ? audioComponent.getAudioAttributes() : AudioAttributes.DEFAULT);
   }
 
-  public boolean setPlaybackSpeed(float playbackSpeed) {
+  public void setPlaybackSpeed(float playbackSpeed) {
     player.setPlaybackSpeed(playbackSpeed);
-    return true;
   }
 
   public float getPlaybackSpeed() {

extensions/media2/src/main/java/com/google/android/exoplayer2/ext/media2/SessionPlayerConnector.java

@@ -178,14 +178,20 @@ public final class SessionPlayerConnector extends SessionPlayer {
     Assertions.checkArgument(playbackSpeed > 0f);
     return playerCommandQueue.addCommand(
         PlayerCommandQueue.COMMAND_CODE_PLAYER_SET_SPEED,
-        /* command= */ () -> player.setPlaybackSpeed(playbackSpeed));
+        /* command= */ () -> {
+          player.setPlaybackSpeed(playbackSpeed);
+          return true;
+        });
   }
 
   @Override
   public ListenableFuture<PlayerResult> setAudioAttributes(AudioAttributesCompat attr) {
     return playerCommandQueue.addCommand(
         PlayerCommandQueue.COMMAND_CODE_PLAYER_SET_AUDIO_ATTRIBUTES,
-        /* command= */ () -> player.setAudioAttributes(Assertions.checkNotNull(attr)));
+        /* command= */ () -> {
+          player.setAudioAttributes(Assertions.checkNotNull(attr));
+          return true;
+        });
   }
 
   @Override