Disable flaky test NewTabPageTest#testRender_FocusFakeBox

Bug: 888129
Change-Id: I4000a8b4f25e1a853d882090cdc3a09e8719dd7b
Reviewed-on: https://chromium-review.googlesource.com/1246464Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594358}

chrome/android/javatests/src/org/chromium/chrome/browser/ntp/NewTabPageTest.java

@@ -285,6 +285,7 @@ public class NewTabPageTest {
      */
     @Test
     @SmallTest
+    @DisabledTest(message = "https://crbug.com/888129")
     @Feature({"NewTabPage", "FeedNewTabPage"})
     @ParameterAnnotations.UseMethodParameter(InterestFeedParams.class)
     public void testFocusFakebox(boolean interestFeedEnabled) {