(fix landed) Revert of Mark a FirstRunIntegrationTest flaky

chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
index c7a1bdfef9ea161976913fc66c5bc04663cd32c4..19cd037d72258169da74496878d793d14b32f960 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/firstrun/FirstRunIntegrationTest.java
@@ -27,7 +27,6 @@
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.annotations.SuppressFBWarnings;
-import org.chromium.base.test.util.DisabledTest;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.customtabs.CustomTabActivity;
@@ -241,9 +240,8 @@
         runSearchEnginePromptTest(LocaleManager.SEARCH_ENGINE_PROMO_DONT_SHOW);
     }
 
-    // @Test
-    // @MediumTest
-    @DisabledTest // crbug.com/718461
+    @Test
+    @MediumTest
     public void testDefaultSearchEngine_ShowExisting() throws Exception {
         runSearchEnginePromptTest(LocaleManager.SEARCH_ENGINE_PROMO_SHOW_EXISTING);
     }