Enable test testSwitchToTabSuggestionWhenIncognitoTabOnTop

The CL-https://chromium-review.googlesource.com/c/chromium/src/+/2382958
caused this test to fail was reverted, so enable the test now.
I thought "about"blank" was the problem, but after check the code,
"about:blank" should not been recommended in the Omnibox suggestions,
Therefore, using "about" here is kind of a test for that as well.


Bug: 1126145
Change-Id: I2d78194c4663436d91a9c5965ca9fb4bdd0fc27a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2402324Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Gang Wu <gangwu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805950}

chrome/android/javatests/src/org/chromium/chrome/browser/omnibox/suggestions/SwitchToTabTest.java

@@ -282,7 +282,6 @@ public class SwitchToTabTest {
     @Test
     @MediumTest
     @MinAndroidSdkLevel(Build.VERSION_CODES.N)
-    @DisabledTest(message = "Flaky - https://crbug.com/1126145")
     @EnableFeatures("OmniboxTabSwitchSuggestions")
     @CommandLineFlags.Add(ChromeSwitches.DISABLE_TAB_MERGING_FOR_TESTING)
     public void testSwitchToTabSuggestionWhenIncognitoTabOnTop() throws InterruptedException {