weblayer: marks test as >=86

Necessary as behavior landed in 86.

BUG=1127518
TEST=test only change
TBR=jam@chromium.org

Change-Id: Id7706fcd19329e4975a1ef7b358ee9d1aec8cb93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2441931Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812482}

weblayer/browser/android/javatests/src/org/chromium/weblayer/test/DownloadCallbackTest.java

@@ -188,6 +188,7 @@ public class DownloadCallbackTest {
      */
     @Test
     @SmallTest
+    @MinWebLayerVersion(86) // Behavior landed in 86.
     public void testFirstNavigationIsDownloadClosesTab() throws Throwable {
         // Set up listening for the tab removal that we expect to happen.
         CallbackHelper onTabRemovedCallbackHelper = new CallbackHelper();