Use FSEvents for recursive file watch on Mac

base/files/file_path_watcher_browsertest.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 "base/files/file_path_watcher.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <aclapi.h>
 #elif defined(OS_POSIX)
@@ skipping 187 matching lines @@
 };
 
 bool FilePathWatcherTest::SetupWatch(const FilePath& target,
                                      FilePathWatcher* watcher,
                                      TestDelegateBase* delegate,
                                      bool recursive_watch) {
   base::WaitableEvent completion(false, false);
   bool result;
   file_thread_.message_loop_proxy()->PostTask(
       FROM_HERE,
-      base::Bind(SetupWatchCallback,
-                 target, watcher, delegate, recursive_watch, &result,
-                 &completion));
+      base::Bind(SetupWatchCallback, target, watcher, delegate, recursive_watch,
+                 &result, &completion));
   completion.Wait();
   return result;
 }
 
 // Basic test: Create the file and verify that we notice.
 TEST_F(FilePathWatcherTest, NewFile) {
   FilePathWatcher watcher;
   scoped_ptr<TestDelegate> delegate(new TestDelegate(collector()));
   ASSERT_TRUE(SetupWatch(test_file(), &watcher, delegate.get(), false));
 
@@ skipping 255 matching lines @@
   ASSERT_TRUE(WaitForEvents());
 
   // Move the parent directory.
   base::Move(dir, dest);
   VLOG(1) << "Waiting for directory move";
   ASSERT_TRUE(WaitForEvents());
   DeleteDelegateOnFileThread(file_delegate.release());
   DeleteDelegateOnFileThread(subdir_delegate.release());
 }
 
-#if defined(OS_WIN) || defined(OS_LINUX)
+#if defined(OS_WIN) || defined(OS_LINUX) || defined(OS_MACOSX)
 TEST_F(FilePathWatcherTest, RecursiveWatch) {
   FilePathWatcher watcher;
   FilePath dir(temp_dir_.path().AppendASCII("dir"));
   scoped_ptr<TestDelegate> delegate(new TestDelegate(collector()));
   ASSERT_TRUE(SetupWatch(dir, &watcher, delegate.get(), true));
 
   // Main directory("dir") creation.
   ASSERT_TRUE(base::CreateDirectory(dir));
   ASSERT_TRUE(WaitForEvents());
 
@@ skipping 331 matching lines @@
   ASSERT_TRUE(ChangeFilePermissions(test_dir1, Execute, false));
   ASSERT_TRUE(WaitForEvents());
   ASSERT_TRUE(ChangeFilePermissions(test_dir1, Execute, true));
   DeleteDelegateOnFileThread(delegate.release());
 }
 
 #endif  // OS_MACOSX
 }  // namespace
 
 }  // namespace base