Batch DisplayCutoutTests

Test time reduced from 38143ms to 1521ms.

Bug: 989569
Change-Id: Ibe0b271138bcfcc3095d216d2af91013b412e84d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2439476
Commit-Queue: benjamin joyce <bjoyce@chromium.org>
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811953}

chrome/android/javatests/src/org/chromium/chrome/browser/display_cutout/DisplayCutoutTest.java

@@ -13,6 +13,7 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import org.chromium.base.test.util.Batch;
 import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.blink.mojom.ViewportFit;
@@ -26,6 +27,7 @@ import java.util.concurrent.TimeoutException;
  * Tests the display cutout.
  */
 @RunWith(ChromeJUnit4ClassRunner.class)
+@Batch(Batch.PER_CLASS)
 @CommandLineFlags.Add({ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE})
 @MinAndroidSdkLevel(Build.VERSION_CODES.P)
 public class DisplayCutoutTest {