Make HttpDataSourceTestEnv require API 19

PiperOrigin-RevId: 454945333
(cherry picked from commit 7f89531c)

libraries/test_utils/src/main/java/androidx/media3/test/utils/HttpDataSourceTestEnv.java

@@ -19,6 +19,7 @@ package androidx.media3.test.utils;
 import static androidx.media3.test.utils.WebServerDispatcher.getRequestPath;
 import static androidx.media3.test.utils.WebServerDispatcher.getRequestPath;
 
 
 import android.net.Uri;
 import android.net.Uri;
+import androidx.annotation.RequiresApi;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.datasource.HttpDataSource;
 import androidx.media3.datasource.HttpDataSource;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableList;
@@ -31,6 +32,7 @@ import org.junit.Rule;
 import org.junit.rules.ExternalResource;
 import org.junit.rules.ExternalResource;
 
 
 /** A JUnit {@link Rule} that creates test resources for {@link HttpDataSource} contract tests. */
 /** A JUnit {@link Rule} that creates test resources for {@link HttpDataSource} contract tests. */
+@RequiresApi(19)
 @UnstableApi
 @UnstableApi
 public class HttpDataSourceTestEnv extends ExternalResource {
 public class HttpDataSourceTestEnv extends ExternalResource {
   private static int seed = 0;
   private static int seed = 0;