Enable WorkerTest.WorkerContextMultiPort.

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/test/automation/browser_proxy.h"
@@ skipping 211 matching lines @@
 }
 
 TEST_F(WorkerTest, WorkerConstructor) {
   RunWorkerFastLayoutTest("worker-constructor.html");
 }
 
 TEST_F(WorkerTest, WorkerContextGc) {
   RunWorkerFastLayoutTest("worker-context-gc.html");
 }
 
-// BUG 42783
-// Still fails intermittently on rel builds of Linux.
-#if defined(OS_LINUX)
-#define WorkerContextMultiPort DISABLED_WorkerContextMultiPort
-#endif
-
 TEST_F(WorkerTest, WorkerContextMultiPort) {
   RunWorkerFastLayoutTest("worker-context-multi-port.html");
 }
 
 TEST_F(WorkerTest, WorkerEventListener) {
   RunWorkerFastLayoutTest("worker-event-listener.html");
 }
 
 TEST_F(WorkerTest, WorkerGC) {
   RunWorkerFastLayoutTest("worker-gc.html");
@@ skipping 381 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));
 }