DisabletestModalNativeAppBannerCanBeTriggeredMultipleTimesCustomTab.

It is flaky. See for instance
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/android-kitkat-arm-rel/121816.

Bug: 903658, 903657
Change-Id: Ic682ac60329923a35745d135d101d0eb8b61b08b
Tbr: mdjones@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/1329161
Commit-Queue: Patrik Höglund <phoglund@chromium.org>
Reviewed-by: Patrik Höglund <phoglund@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606818}

chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.java

@@ -39,6 +39,7 @@ import org.mockito.quality.Strictness;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.DisabledTest;
 import org.chromium.base.test.util.Feature;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
@@ -569,6 +570,7 @@ public class AppBannerManagerTest {
     @Test
     @SmallTest
     @Feature({"AppBanners"})
+    @DisabledTest(message = "crbug.com/903657")
     public void testAppInstalledModalNativeAppBannerCustomTab() throws Exception {
         mCustomTabActivityTestRule.startCustomTabActivityWithIntent(
                 CustomTabsTestUtils.createMinimalCustomTabIntent(
@@ -634,6 +636,7 @@ public class AppBannerManagerTest {
     @Test
     @SmallTest
     @Feature({"AppBanners"})
+    @DisabledTest(message = "crbug.com/903658")
     public void testModalNativeAppBannerCanBeTriggeredMultipleTimesCustomTab() throws Exception {
         mCustomTabActivityTestRule.startCustomTabActivityWithIntent(
                 CustomTabsTestUtils.createMinimalCustomTabIntent(