[Android] Disable a flaky AutofillKeyboardAccessoryIntegrationTest

Another test that relies on the keyboard to work. Disabling it for now.

(If more tests in this directory flake, feel free to disable them right
away - they are not testing live code. A big rework for all of them is
likely in a forseeable future.)

TBR: bauerb@chromium.org
Bug: 854224
Change-Id: I3b27fd0e500f282ef71d7206ee1ef774edcbe4a5
Reviewed-on: https://chromium-review.googlesource.com/1109682Reviewed-by: Friedrich Horschig <fhorschig@chromium.org>
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Commit-Queue: Friedrich Horschig <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569202}

chrome/android/javatests/src/org/chromium/chrome/browser/autofill/AutofillKeyboardAccessoryIntegrationTest.java

@@ -123,6 +123,7 @@ public class AutofillKeyboardAccessoryIntegrationTest {
     @Test
     @MediumTest
     @Feature({"keyboard-accessory"})
+    @DisabledTest(message = "crbug.com/854224")
     public void testTapInputFieldShowsKeyboardAccessory()
             throws ExecutionException, InterruptedException, TimeoutException {
         loadTestPage(false);