android: Mark flaky tests with @RetryOnFailure

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/ActivityAssignerTest.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.webapps;
 
 import android.test.InstrumentationTestCase;
 import android.test.UiThreadTest;
 import android.test.suitebuilder.annotation.SmallTest;
 
@@ skipping 27 matching lines @@
         for (int i = 0; i < ActivityAssigner.NAMESPACE_COUNT; ++i) {
             mPreferences[i] = new HashMap<String, Object>();
             mContext.addSharedPreferences(ActivityAssigner.PREF_PACKAGE[i], mPreferences[i]);
         }
         ContextUtils.initApplicationContextForTests(mContext);
     }
 
     @UiThreadTest
     @SmallTest
     @Feature({"Webapps"})
+    @RetryOnFailure
     public void testEntriesCreated() {
         ActivityAssigner assigner = ActivityAssigner.instance(ActivityAssigner.WEBAPP_NAMESPACE);
 
         // Make sure that no webapps have been assigned to any Activities for a fresh install.
         checkState(assigner, ActivityAssigner.WEBAPP_NAMESPACE);
         List<ActivityAssigner.ActivityEntry> entries = assigner.getEntries();
         assertEquals(ActivityAssigner.NUM_WEBAPP_ACTIVITIES, entries.size());
         for (ActivityAssigner.ActivityEntry entry : entries) {
             assertEquals(null, entry.mWebappId);
         }
@@ skipping 119 matching lines @@
         // Confirm that the Activity indices go from 0 to NUM_WEBAPP_ACTIVITIES - 1.
         HashSet<Integer> assignedActivities = new HashSet<Integer>();
         for (ActivityAssigner.ActivityEntry entry : entries) {
             assignedActivities.add(entry.mActivityIndex);
         }
         for (int i = 0; i < ActivityAssigner.NUM_WEBAPP_ACTIVITIES; ++i) {
             assertTrue(assignedActivities.contains(i));
         }
     }
 }