Add multi-process notification class.

chrome/browser/multi_process_notification.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 "chrome/browser/multi_process_notification.h"
+
+#include "base/task.h"
+
+namespace multi_process_notification {
+
+Listener::Delegate::~Delegate() {
+}
+
+void Listener::Delegate::OnListenerStarted(
+    const std::string& name, Domain domain, bool success) {
+}
+
+Listener::ListenerStartedTask::ListenerStartedTask(const std::string& name,
+    Domain domain, Listener::Delegate* delegate, bool success)
+    : name_(name), domain_(domain), delegate_(delegate), success_(success) {
+}
+
+Listener::ListenerStartedTask::~ListenerStartedTask() {
+}
+
+void Listener::ListenerStartedTask::Run() {
+  delegate_->OnListenerStarted(name_, domain_, success_);
+}
+
+Listener::NotificationReceivedTask::NotificationReceivedTask(
+    const std::string& name, Domain domain, Listener::Delegate* delegate)
+    : name_(name), domain_(domain), delegate_(delegate) {
+}
+
+Listener::NotificationReceivedTask::~NotificationReceivedTask() {
+}
+
+void Listener::NotificationReceivedTask::Run() {
+  delegate_->OnNotificationReceived(name_, domain_);
+}
+
+}  // namespace multi_process_notification