Mark VideoFullscreenOrientationLockChromeTest to RetryOnFailure

chrome/android/javatests/src/org/chromium/chrome/browser/VideoFullscreenOrientationLockChromeTest.java

 // Copyright 2017 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;
 
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.net.Uri;
 import android.support.test.filters.MediumTest;
 import android.view.KeyEvent;
 
 import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.Feature;
+import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.base.test.util.UrlUtils;
 import org.chromium.chrome.browser.download.DownloadUtils;
 import org.chromium.chrome.test.ChromeTabbedActivityTestBase;
 import org.chromium.content.browser.test.util.Criteria;
 import org.chromium.content.browser.test.util.CriteriaHelper;
 import org.chromium.content.browser.test.util.DOMUtils;
 import org.chromium.content.browser.test.util.JavaScriptUtils;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.media.MediaSwitches;
 import org.chromium.ui.base.DeviceFormFactor;
@@ skipping 66 matching lines @@
         });
     }
 
     @Override
     public void startMainActivity() throws InterruptedException {
         startMainActivityWithURL(UrlUtils.getIsolatedTestFileUrl(TEST_URL));
     }
 
     @MediumTest
     @Feature({"VideoFullscreenOrientationLock"})
+    @RetryOnFailure // The final waitForContentsFullscreenState(false) is flaky - crbug.com/711005.
     public void testUnlockWithDownloadViewerActivity() throws Exception {
         if (DeviceFormFactor.isTablet(getInstrumentation().getContext())) return;
 
         // Start playback to guarantee it's properly loaded.
         assertTrue(DOMUtils.isMediaPaused(getWebContents(), VIDEO_ID));
         DOMUtils.playMedia(getWebContents(), VIDEO_ID);
         DOMUtils.waitForMediaPlay(getWebContents(), VIDEO_ID);
 
         // Trigger requestFullscreen() via a click on a button.
         assertTrue(DOMUtils.clickNode(getActivity().getCurrentContentViewCore(), "fullscreen"));
         waitForContentsFullscreenState(true);
 
         // Should be locked to landscape now, `waitUntilLockedToLandscape` will throw otherwise.
         waitUntilLockedToLandscape();
 
         // Orientation lock should be disabled when download viewer activity is started.
         Uri fileUri = Uri.parse(UrlUtils.getIsolatedTestFileUrl(VIDEO_URL));
         String mimeType = "video/mp4";
         Intent intent =
                 DownloadUtils.getMediaViewerIntentForDownloadItem(fileUri, fileUri, mimeType);
         IntentHandler.startActivityForTrustedIntent(intent);
         waitUntilUnlocked();
 
         // Sometimes the web page doesn't transition out of fullscreen until we exit the download
         // activity and return to the web page.
         sendKeys(KeyEvent.KEYCODE_BACK);
         waitForContentsFullscreenState(false);
     }
 }