Disable flaky testTapGestureFollowedByScrollClearsSelection.

Disable org.chromium.chrome.browser.contextualsearch
ContextualSearchManagerTest
testTapGestureFollowedByScrollClearsSelection
because flaky.

TBR=donnd@chromium.org

Bug: 841017
Change-Id: I0faca09f286ea776ce54d70c411ff61a7649132e
Reviewed-on: https://chromium-review.googlesource.com/1052129Reviewed-by: vitaliii <vitaliii@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557197}

chrome/android/javatests/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagerTest.java

@@ -1443,6 +1443,7 @@ public class ContextualSearchManagerTest {
      * Tests that a Tap gesture followed by scrolling clears the selection.
      */
     @Test
+    @DisabledTest(message = "crbug.com/841017")
     @SmallTest
     @Feature({"ContextualSearch"})
     public void testTapGestureFollowedByScrollClearsSelection()