kqueue implementation of FilePathWatcher on Mac.

content/common/file_path_watcher/file_path_watcher_inotify.cc

 // Copyright (c) 2011 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/common/file_path_watcher/file_path_watcher.h"
 
 #include <errno.h>
 #include <string.h>
 #include <sys/inotify.h>
 #include <sys/ioctl.h>
@@ skipping 80 matching lines @@
   // the object appears, and |is_directory| is set when the event refers to a
   // directory.
   void OnFilePathChanged(InotifyReader::Watch fired_watch,
                          const FilePath::StringType& child,
                          bool created,
                          bool is_directory);
 
   // Start watching |path| for changes and notify |delegate| on each change.
   // Returns true if watch for |path| has been added successfully.
   virtual bool Watch(const FilePath& path,
-                     FilePathWatcher::Delegate* delegate,
-                     base::MessageLoopProxy* loop) OVERRIDE;
+                     FilePathWatcher::Delegate* delegate) OVERRIDE;
 
   // Cancel the watch. This unregisters the instance with InotifyReader.
   virtual void Cancel() OVERRIDE;
 
   // Deletion of the FilePathWatcher will call Cancel() to dispose of this
   // object in the right thread. This also observes destruction of the required
   // cleanup thread, in case it quits before Cancel() is called.
   virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
 
  private:
@@ skipping 244 matching lines @@
   //  - One of the parent directories appears. The event corresponding to the
   //    target appearing might have been missed in this case, so recheck.
   if (target_changed ||
       (change_on_target_path && !created) ||
       (change_on_target_path && file_util::PathExists(target_))) {
     delegate_->OnFilePathChanged(target_);
   }
 }
 
 bool FilePathWatcherImpl::Watch(const FilePath& path,
-                                FilePathWatcher::Delegate* delegate,
-                                base::MessageLoopProxy*) {
+                                FilePathWatcher::Delegate* delegate) {
   DCHECK(target_.empty());
   DCHECK(MessageLoopForIO::current());
 
   set_message_loop(base::MessageLoopProxy::CreateForCurrentThread());
   delegate_ = delegate;
   target_ = path;
   MessageLoop::current()->AddDestructionObserver(this);
 
   std::vector<FilePath::StringType> comps;
   target_.GetComponents(&comps);
@@ skipping 70 matching lines @@
   }
 
   return true;
 }
 
 }  // namespace
 
 FilePathWatcher::FilePathWatcher() {
   impl_ = new FilePathWatcherImpl();
 }