Removing @CallSuper from [add,remove]Listener of ForwardingListener.

PiperOrigin-RevId: 543373503
(cherry picked from commit 03e30b458449e1dc0c30ac39e102539271a6c7d6)

library/common/src/main/java/com/google/android/exoplayer2/ForwardingPlayer.java

@@ -20,7 +20,6 @@ import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 import android.view.TextureView;
-import androidx.annotation.CallSuper;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.audio.AudioAttributes;
 import com.google.android.exoplayer2.metadata.Metadata;
@@ -59,13 +58,14 @@ public class ForwardingPlayer implements Player {
   /**
    * Calls {@link Player#addListener(Listener)} on the delegate.
    *
-   * <p>Overrides of this method must delegate to {@code super.addListener} and not {@code
-   * delegate.addListener}, in order to ensure the correct {@link Player} instance is passed to
-   * {@link Player.Listener#onEvents(Player, Events)} (i.e. this forwarding instance, and not the
+   * <p>Overrides of this method must <strong>not</strong> directly call {@code
+   * delegate.addListener}. If the override wants to pass the {@link Player.Listener} instance to
+   * the delegate {@link Player}, it must do so by calling {@code super.addListener} instead. This
+   * ensures the correct {@link Player} instance is passed to {@link
+   * Player.Listener#onEvents(Player, Events)} (i.e. this forwarding instance, and not the
    * underlying {@code delegate} instance).
    */
   @Override
-  @CallSuper
   public void addListener(Listener listener) {
     player.addListener(new ForwardingListener(this, listener));
   }
@@ -73,12 +73,11 @@ public class ForwardingPlayer implements Player {
   /**
    * Calls {@link Player#removeListener(Listener)} on the delegate.
    *
-   * <p>Overrides of this method must delegate to {@code super.removeListener} and not {@code
-   * delegate.removeListener}, in order to ensure the listener 'matches' the listener added via
-   * {@link #addListener} (otherwise the listener registered on the delegate won't be removed).
+   * <p>Overrides of this method must <strong>not</strong> directly call {@code
+   * delegate.removeListener}. If the override wants to pass the {@link Player.Listener} instance to
+   * the delegate {@link Player}, it must do so by calling {@code super.removeListener} instead.
    */
   @Override
-  @CallSuper
   public void removeListener(Listener listener) {
     player.removeListener(new ForwardingListener(this, listener));
   }