Use FileDescriptorWatcher in base::TestLauncher.

base/test/launcher/unit_test_launcher.cc

 // Copyright 2013 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/test/launcher/unit_test_launcher.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
@@ skipping 13 matching lines @@
 #include "base/test/gtest_xml_util.h"
 #include "base/test/launcher/test_launcher.h"
 #include "base/test/test_switches.h"
 #include "base/test/test_timeouts.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/threading/thread_checker.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+#if defined(OS_POSIX)
+#include "base/files/file_descriptor_watcher_posix.h"
+#endif
+
 namespace base {
 
 namespace {
 
 // This constant controls how many tests are run in a single batch by default.
 const size_t kDefaultTestBatchLimit = 10;
 
 const char kHelpFlag[] = "help";
 
 // Flag to run all tests in a single process.
@@ skipping 178 matching lines @@
     return 1;
 
   fprintf(stdout,
           "IMPORTANT DEBUGGING NOTE: batches of tests are run inside their\n"
           "own process. For debugging a test inside a debugger, use the\n"
           "--gtest_filter=<your_test_name> flag along with\n"
           "--single-process-tests.\n");
   fflush(stdout);
 
   MessageLoopForIO message_loop;
+#if defined(OS_POSIX)
+  FileDescriptorWatcher file_descriptor_watcher(&message_loop);
+#endif
 
   DefaultUnitTestPlatformDelegate platform_delegate;
   UnitTestLauncherDelegate delegate(
       &platform_delegate, batch_limit, use_job_objects);
   base::TestLauncher launcher(&delegate, default_jobs);
   bool success = launcher.Run();
 
   fprintf(stdout, "Tests took %" PRId64 " seconds.\n",
           (base::TimeTicks::Now() - start_time).InSeconds());
   fflush(stdout);
@@ skipping 385 matching lines @@
     TestLauncher* test_launcher,
     const std::vector<std::string>& test_names) {
   ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       Bind(&RunUnitTestsSerially, test_launcher, platform_delegate_, test_names,
            use_job_objects_ ? TestLauncher::USE_JOB_OBJECTS : 0));
   return test_names.size();
 }
 
 }  // namespace base