Use FileDescriptorWatcher in base::TestLauncher.

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 <stddef.h>
 
 #include <map>
 #include <memory>
@@ skipping 22 matching lines @@
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/public/app/content_main.h"
 #include "content/public/app/content_main_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/sandbox_init.h"
 #include "content/public/test/browser_test.h"
 #include "net/base/escape.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(OS_POSIX)
+#include "base/files/file_descriptor_watcher_posix.h"
+#endif
+
 #if defined(OS_WIN)
 #include "base/base_switches.h"
 #include "content/common/sandbox_win.h"
 #include "content/public/app/sandbox_helper_win.h"
 #include "sandbox/win/src/sandbox_factory.h"
 #include "sandbox/win/src/sandbox_types.h"
 #elif defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
 #endif
 
@@ skipping 477 matching lines @@
 
   fprintf(stdout,
       "IMPORTANT DEBUGGING NOTE: each test is run inside its own process.\n"
       "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::MessageLoopForIO message_loop;
+#if defined(OS_POSIX)
+  base::FileDescriptorWatcher file_descriptor_watcher(&message_loop);
+#endif
 
   // Allow the |launcher_delegate| to modify |default_jobs|.
   launcher_delegate->AdjustDefaultParallelJobs(&default_jobs);
 
   WrapperTestLauncherDelegate delegate(launcher_delegate);
   base::TestLauncher launcher(&delegate, default_jobs);
   const int result = launcher.Run() ? 0 : 1;
   launcher_delegate->OnDoneRunningTests();
   return result;
 }
 
 TestLauncherDelegate* GetCurrentTestLauncherDelegate() {
   return g_launcher_delegate;
 }
 
 ContentMainParams* GetContentMainParams() {
   return g_params;
 }
 
 }  // namespace content