Mark Test as Flaky

Mark VrDisplayTests as flaky to unblock TreeHugger.

Bug: 156312992
Test: n/a
Change-Id: I355b570c14dd71f9845771cfbbdcdabae27402a4

tests/framework/base/windowmanager/src/android/server/wm/VrDisplayTests.java

diff --git a/tests/framework/base/windowmanager/src/android/server/wm/VrDisplayTests.java b/tests/framework/base/windowmanager/src/android/server/wm/VrDisplayTests.java
index 9617c7b..5e3e030 100644
--- a/tests/framework/base/windowmanager/src/android/server/wm/VrDisplayTests.java
+++ b/tests/framework/base/windowmanager/src/android/server/wm/VrDisplayTests.java
@@ -29,6 +29,7 @@
 import static org.junit.Assume.assumeTrue;
 
 import android.content.ComponentName;
+import android.platform.test.annotations.FlakyTest;
 import android.platform.test.annotations.Presubmit;
 import android.provider.Settings;
 import android.server.wm.WindowManagerState.DisplayContent;
@@ -46,6 +47,7 @@
  *     atest CtsWindowManagerDeviceTestCases:VrDisplayTests
  */
 @Presubmit
+@FlakyTest
 @android.server.wm.annotation.Group3
 public class VrDisplayTests extends MultiDisplayTestBase {
     private static final int VR_VIRTUAL_DISPLAY_WIDTH = 700;