Disable failing BookmarkPersonalizedSigninPromoDismissTest tests on Tablets

Failing on Marshmallow Tablet Tester:
testPromoImpressionCountIncrementAfterDisplayingSigninPromo
testPromoNotShownAfterBeingDismissed

BUG=1088730
TBR=twellington@chromium.org

Change-Id: Ib9a8d928ccfe3aa7ed6a6c4cac378858e1cd75ed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2224223
Commit-Queue: Tim Volodine <timvolodine@chromium.org>
Reviewed-by: Tim Volodine <timvolodine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#773757}

chrome/android/javatests/src/org/chromium/chrome/browser/bookmarks/BookmarkPersonalizedSigninPromoDismissTest.java

@@ -24,6 +24,7 @@ import org.junit.rules.RuleChain;
 import org.junit.runner.RunWith;
 
 import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.DisableIf;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.flags.ChromeSwitches;
@@ -35,6 +36,7 @@ import org.chromium.chrome.test.util.BookmarkTestRule;
 import org.chromium.chrome.test.util.BookmarkTestUtil;
 import org.chromium.chrome.test.util.ChromeTabUtils;
 import org.chromium.content_public.browser.test.util.TestThreadUtils;
+import org.chromium.ui.test.util.UiDisableIf;
 
 /**
  * Tests different scenarios when the bookmark personalized signin promo is not shown.
@@ -75,6 +77,7 @@ public class BookmarkPersonalizedSigninPromoDismissTest {
 
     @Test
     @MediumTest
+    @DisableIf.Device(type = {UiDisableIf.TABLET}) // https://crbug.com/1088730
     public void testPromoNotShownAfterBeingDismissed() {
         mBookmarkTestRule.showBookmarkManager(mSyncTestRule.getActivity());
         onView(withId(R.id.signin_promo_view_container)).check(matches(isDisplayed()));
@@ -108,6 +111,7 @@ public class BookmarkPersonalizedSigninPromoDismissTest {
 
     @Test
     @MediumTest
+    @DisableIf.Device(type = {UiDisableIf.TABLET}) // https://crbug.com/1088730
     public void testPromoImpressionCountIncrementAfterDisplayingSigninPromo() {
         assertEquals(0, SigninPromoController.getSigninPromoImpressionsCountBookmarks());
         mBookmarkTestRule.showBookmarkManager(mSyncTestRule.getActivity());