GTTF: kill spawned test processes when the launcher is killed

content/public/test/test_launcher.cc

 // 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 "content/public/test/test_launcher.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 341 matching lines @@
       "For debugging a test inside a debugger, use the\n"
       "--gtest_filter=<your_test_name> flag along with either\n"
       "--single_process (to run the test in one launcher/browser process) or\n"
       "--single-process (to do the above, and also run Chrome in single-"
       "process mode).\n");
 
   base::AtExitManager at_exit;
   testing::InitGoogleTest(&argc, argv);
   TestTimeouts::Initialize();
 
-  base::MessageLoop message_loop;
+  base::MessageLoopForIO message_loop;
 
   WrapperTestLauncherDelegate delegate(launcher_delegate);
   return base::LaunchTests(&delegate, argc, argv);
 }
 
 TestLauncherDelegate* GetCurrentTestLauncherDelegate() {
   return g_launcher_delegate;
 }
 
 }  // namespace content