Mark WorkerTest.WorkerNavigator as flaky.

content/worker/worker_uitest.cc

 // Copyright (c) 2011 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.
 
 #include "base/file_path.h"
 #include "base/string_util.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/common/url_constants.h"
@@ skipping 293 matching lines @@
 }
 
 TEST_F(WorkerTest, WorkerMessagePortGC) {
   RunWorkerFastLayoutTest("worker-messageport-gc.html");
 }
 
 TEST_F(WorkerTest, WorkerMultiPort) {
   RunWorkerFastLayoutTest("worker-multi-port.html");
 }
 
-TEST_F(WorkerTest, WorkerNavigator) {
+// Flaky, http://crbug.com/76426.
+TEST_F(WorkerTest, FLAKY_WorkerNavigator) {
   RunWorkerFastLayoutTest("worker-navigator.html");
 }
 
 TEST_F(WorkerTest, WorkerReplaceGlobalConstructor) {
   RunWorkerFastLayoutTest("worker-replace-global-constructor.html");
 }
 
 TEST_F(WorkerTest, WorkerReplaceSelf) {
   RunWorkerFastLayoutTest("worker-replace-self.html");
 }
@@ skipping 438 matching lines @@
   RunWorkerFileSystemLayoutTest("file-writer-truncate-extend.html");
 }
 
 TEST_F(WorkerFileSystemTest, FileWriterSyncTruncateExtend) {
   RunWorkerFileSystemLayoutTest("file-writer-sync-truncate-extend.html");
 }
 
 TEST_F(WorkerFileSystemTest, FileWriterSyncWriteOverlapped) {
   RunWorkerFileSystemLayoutTest("file-writer-sync-write-overlapped.html");
 }