Disable DownloadCallbackTest.testBasic on Android

org.chromium.weblayer.test.DownloadCallbackTest.testBasic fails on
Android,
https://analysis.chromium.org/p/chromium/flake-portal/flakes/
occurrences?key=ag9zfmZpbmRpdC1mb3ItbWVybwsSBUZsYWtlImRjaHJvbWl1bUB3ZWJs
YXllcl9pbnN0cnVtZW50YXRpb25fdGVzdF9hcGtAb3JnLmNocm9taXVtLndlYmxheWVyLnRl
c3QuRG93bmxvYWRDYWxsYmFja1Rlc3QjdGVzdEJhc2ljDA,
disable it for now until it is fixed.

TBR=jam@chromium.org

Bug: 1116248
Change-Id: I24f0ab8414f4b17ff3689f3686e3f58682c48b37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354162Reviewed-by: Lan Wei <lanwei@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797990}

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

@@ -18,6 +18,7 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import org.chromium.base.test.util.DisabledTest;
 import org.chromium.content_public.browser.test.util.Criteria;
 import org.chromium.content_public.browser.test.util.CriteriaHelper;
 import org.chromium.content_public.browser.test.util.TestThreadUtils;
@@ -197,6 +198,7 @@ public class DownloadCallbackTest {
 
     @Test
     @SmallTest
+    @DisabledTest(message = "Flaky - https://crbug.com/1116248")
     public void testBasic() {
         String url = mActivityTestRule.getTestDataURL("content-disposition.html");
         TestThreadUtils.runOnUiThreadBlocking(