kqueue implementation of FilePathWatcher on Mac.

chrome/common/service_process_util_mac.mm

 // 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 "chrome/common/service_process_util_posix.h"
 
 #import <Foundation/Foundation.h>
 #include <launch.h>
 
 #include <vector>
@@ skipping 161 matching lines @@
   CFErrorRef err = NULL;
   CFDictionaryRef dict =
       Launchd::GetInstance()->CopyDictionaryByCheckingIn(&err);
 
   if (!dict) {
     LOG(ERROR) << "CopyLaunchdDictionaryByCheckingIn: " << err;
     CFRelease(err);
     return false;
   }
   state_->launchd_conf_.reset(dict);
-  state_->ui_message_loop_= base::MessageLoopProxy::CreateForCurrentThread();
   return true;
 }
 
 IPC::ChannelHandle ServiceProcessState::GetServiceProcessChannel() {
   CHECK(state_);
   NSDictionary *ns_launchd_conf = base::mac::CFToNSCast(state_->launchd_conf_);
   NSDictionary* socket_dict =
       [ns_launchd_conf objectForKey:@ LAUNCH_JOBKEY_SOCKETS];
   NSArray* sockets =
       [socket_dict objectForKey:GetServiceProcessLaunchDSocketKey()];
@@ skipping 123 matching lines @@
     return false;
   }
 
   FilePath executable_path = FilePath([exe_path fileSystemRepresentation]);
   scoped_ptr<ExecFilePathWatcherDelegate> delegate(
       new ExecFilePathWatcherDelegate);
   if (!delegate->Init(executable_path)) {
     LOG(ERROR) << "executable_watcher_.Init " << executable_path.value();
     return false;
   }
-  if (!executable_watcher_.Watch(executable_path,
-                                 delegate.release(),
-                                 ui_message_loop_)) {
+  if (!executable_watcher_.Watch(executable_path, delegate.release())) {
     LOG(ERROR) << "executable_watcher_.watch " << executable_path.value();
     return false;
   }
   return true;
 }
 
 bool ExecFilePathWatcherDelegate::Init(const FilePath& path) {
   return base::mac::FSRefFromPath(path.value(), &executable_fsref_);
 }
 
@@ skipping 97 matching lines @@
       CFErrorRef err = NULL;
       if (!Launchd::GetInstance()->RemoveJob(label, &err)) {
         base::mac::ScopedCFTypeRef<CFErrorRef> scoped_err(err);
         LOG(ERROR) << "RemoveJob " << err;
         // Exiting with zero, so launchd doesn't restart the process.
         exit(0);
       }
     }
   }
 }