Revert 70629 - Add multi-process notification class....

chrome/common/multi_process_notification.h

-// 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.
-
-#ifndef CHROME_COMMON_MULTI_PROCESS_NOTIFICATION_H_
-#define CHROME_COMMON_MULTI_PROCESS_NOTIFICATION_H_
-#pragma once
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/scoped_ptr.h"
-
-class Task;
-class MessageLoop;
-
-// Platform abstraction for a notification that can be sent between processes.
-// Notifications are strings. The string will be prefixed accordingly per
-// platform (so on Mac OS X a "Happy" notification will become
-// "org.chromium.Happy").
-namespace multi_process_notification {
-
-class ListenerImpl;
-
-enum Domain {
-  // Notifications intended to be received by processes running with the
-  // same uid and same profile.
-  ProfileDomain,
-  // Notifications intended to be received by processes running with the
-  // same uid.
-  UserDomain,
-  // Notifications intended to be received by processes running on the
-  // same system.
-  SystemDomain
-};
-
-// Posts a notification |name| to |domain|.
-// Returns true if the notification was posted.
-bool Post(const std::string& name, Domain domain);
-
-// A notification listener. Will listen for a given notification and
-// call the delegate. Note that the delegate is not owned by the listener.
-class Listener {
- public:
-  class Delegate {
-   public:
-    virtual ~Delegate() { }
-    virtual void OnNotificationReceived(const std::string& name,
-                                        Domain domain) = 0;
-  };
-
-  Listener(const std::string& name, Domain domain, Delegate* delegate);
-
-  // A destructor is required for scoped_ptr to compile.
-  ~Listener();
-
-  bool Start();
-
- private:
-  scoped_ptr<ListenerImpl> impl_;
-
-  DISALLOW_COPY_AND_ASSIGN(Listener);
-};
-
-// A delegate implementation that performs a task when a notification is
-// received. Note that it does not check the notification, and will fire
-// for any notification it receives. It will only fire the task on the
-// first notification received.
-class PerformTaskOnNotification : public Listener::Delegate {
- public:
-  explicit PerformTaskOnNotification(Task* task);
-  virtual ~PerformTaskOnNotification();
-
-  virtual void OnNotificationReceived(const std::string& name,
-                                      Domain domain) OVERRIDE;
-  bool WasNotificationReceived();
-
- private:
-  scoped_ptr<Task> task_;
-
-  DISALLOW_COPY_AND_ASSIGN(PerformTaskOnNotification);
-};
-
-}  // namespace multi_process_notification
-
-#endif  // CHROME_COMMON_MULTI_PROCESS_NOTIFICATION_H_