Enables use-machine-stack.html worker test.

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/string_util.h"
 #include "chrome/browser/worker_host/worker_service.h"
 #include "chrome/test/automation/browser_proxy.h"
 #include "chrome/test/automation/tab_proxy.h"
 #include "chrome/test/ui/ui_layout_test.h"
 
@@ skipping 32 matching lines @@
 }
 
 // WorkerFastLayoutTests works on the linux try servers.
 #if defined(OS_LINUX)
 #define WorkerFastLayoutTests DISABLED_WorkerFastLayoutTests
 #endif
 
 TEST_F(WorkerTest, WorkerFastLayoutTests) {
   static const char* kLayoutTestFiles[] = {
     "stress-js-execution.html",
-#if defined(OS_WIN)
-    // Workers don't properly initialize the V8 stack guard.
-    // (http://code.google.com/p/chromium/issues/detail?id=21653).
     "use-machine-stack.html",
-#endif
     "worker-call.html",
     // Disabled because cloning ports are too slow in Chromium to meet the
     // thresholds in this test.
     // http://code.google.com/p/chromium/issues/detail?id=22780
     // "worker-cloneport.html",
 
     "worker-close.html",
     "worker-constructor.html",
     "worker-context-gc.html",
     "worker-context-multi-port.html",
@@ skipping 172 matching lines @@
   // Check that we didn't create more than the max number of workers.
   EXPECT_EQ(total_workers + number_of_processes,
             UITest::GetBrowserProcessCount());
 
   // Now close a page and check that the queued workers were started.
   tab->NavigateToURL(GetTestUrl(L"google", L"google.html"));
 
   EXPECT_EQ(total_workers + number_of_processes,
             UITest::GetBrowserProcessCount());
 }