Enable WorkerTest.QueuedSharedWorkerShutdown because it seems to work 100% now.

chrome/worker/worker_uitest.cc

 // Copyright (c) 2009 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 "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/worker_host/worker_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
@@ skipping 563 matching lines @@
   ASSERT_TRUE(tab.get());
   GURL url = ui_test_utils::GetTestUrl(FilePath(kTestDir),
                                        FilePath(kWorkerClose));
   ASSERT_TRUE(tab->NavigateToURL(url));
   std::string value = WaitUntilCookieNonEmpty(tab.get(), url,
       kTestCompleteCookie, action_max_timeout_ms());
   ASSERT_STREQ(kTestCompleteSuccess, value.c_str());
   ASSERT_TRUE(WaitForProcessCountToBe(1, 0));
 }
 
-// http://crbug.com/42641
-TEST_F(WorkerTest, FAILS_QueuedSharedWorkerShutdown) {
+TEST_F(WorkerTest, QueuedSharedWorkerShutdown) {
   // Tests to make sure that queued shared workers are started up when
   // shared workers shut down.
   int max_workers_per_tab = WorkerService::kMaxWorkersPerTabWhenSeparate;
   GURL url = ui_test_utils::GetTestUrl(FilePath(kTestDir),
       FilePath(kQuerySharedWorkerShutdownFile));
   url = GURL(url.spec() + StringPrintf("?count=%d", max_workers_per_tab));
 
   scoped_refptr<TabProxy> tab(GetActiveTab());
   ASSERT_TRUE(tab.get());
   ASSERT_TRUE(tab->NavigateToURL(url));
@@ skipping 58 matching lines @@
   GURL url2 = ui_test_utils::GetTestUrl(FilePath(kTestDir),
                                         FilePath(kSingleSharedWorkersFile));
   url2 = GURL(url2.spec() + StringPrintf("?id=%d", max_workers_per_tab));
   ASSERT_TRUE(window->AppendTab(url2));
 
   std::string value = WaitUntilCookieNonEmpty(tab.get(), url,
       kTestCompleteCookie, action_max_timeout_ms());
   ASSERT_STREQ(kTestCompleteSuccess, value.c_str());
   ASSERT_TRUE(WaitForProcessCountToBe(2, max_workers_per_tab+1));
 }