android: Mark flaky tests with @RetryOnFailure

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabsConnectionTest.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.customtabs;
 
 import static org.chromium.base.test.util.Restriction.RESTRICTION_TYPE_NON_LOW_END_DEVICE;
 
 import android.app.Application;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Process;
 import android.support.customtabs.CustomTabsService;
 import android.support.customtabs.CustomTabsSessionToken;
 import android.test.InstrumentationTestCase;
 import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.PathUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.library_loader.LibraryLoader;
 import org.chromium.base.library_loader.LibraryProcessType;
 import org.chromium.base.test.util.Restriction;
+import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.browser.WarmupManager;
 import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.content_public.browser.WebContents;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.Callable;
 import java.util.concurrent.FutureTask;
 
 /** Tests for CustomTabsConnection. */
@@ skipping 261 matching lines @@
             public void run() {
                 assertNull(WarmupManager.getInstance().takeSpareWebContents(false, false));
                 String referrer = mCustomTabsConnection.getReferrerForSession(token).getUrl();
                 assertNotNull(mCustomTabsConnection.takePrerenderedUrl(token, URL, referrer));
             }
         });
     }
 
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
+    @RetryOnFailure
     public void testCanCancelPrerender() {
         final CustomTabsSessionToken token = assertWarmupAndMayLaunchUrl(null, URL, true);
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {
                 assertNull(WarmupManager.getInstance().takeSpareWebContents(false, false));
             }
         });
         assertTrue(mCustomTabsConnection.mayLaunchUrl(token, null, null, null));
         // mayLaunchUrl() posts a task, the following has to run after it.
@@ skipping 251 matching lines @@
         } finally {
             ThreadUtils.runOnUiThreadBlocking(new Runnable() {
                 @Override
                 public void run() {
                     PrefServiceBridge.getInstance().setNetworkPredictionEnabled(enabled);
                 }
             });
         }
     }
 }