Print stack traces in child processes when browser tests failed.

chrome/test/data/webui/net_internals/dns_view.js

 // Copyright (c) 2012 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 test fixture.
 GEN_INCLUDE(['net_internals_test.js']);
 
 // Anonymous namespace
 (function() {
 
@@ skipping 244 matching lines @@
     taskQueue.addTask(new ClearCacheTask());
     taskQueue.addTask(new WaitForEntryDestructionTask('somewhere.com'));
     taskQueue.addTask(new WaitForEntryDestructionTask('nowhere.com'));
   }
   taskQueue.run(true);
 });
 
 // Flaky on Win Debug build - crbug.com/517484
 GEN('#if defined(OS_WIN)');
 GEN('# define MAYBE_netInternalsDnsViewIncognitoClears \\');
-GEN('     DISABLED_netInternalsDnsViewIncognitoClears');
+GEN('     netInternalsDnsViewIncognitoClears');
 GEN('#else');
 GEN('# define MAYBE_netInternalsDnsViewIncognitoClears \\');
 GEN('     netInternalsDnsViewIncognitoClears');
 GEN('#endif');
 
 /**
  * Makes sure that openning and then closing an incognito window clears the
  * DNS cache.  To keep things simple, we add a fake cache entry ourselves,
  * rather than having the incognito browser create one.
  */
 TEST_F('NetInternalsTest',
        'MAYBE_netInternalsDnsViewIncognitoClears', function() {
   NetInternalsTest.switchToView('dns');
   var taskQueue = new NetInternalsTest.TaskQueue(true);
   taskQueue.addTask(new NetInternalsTest.CreateIncognitoBrowserTask());
   taskQueue.addTask(new AddCacheEntryTask(
       'somewhere.com', '1.2.3.4', 0, true));
   taskQueue.addTask(NetInternalsTest.getCloseIncognitoBrowserTask());
   taskQueue.addTask(new WaitForEntryDestructionTask('somewhere.com'));
   taskQueue.run(true);
 });
 
 })();  // Anonymous namespace