[NOT FOR REVIEW] Significantly simplify the PlatformNotificationService //content API.

content/browser/notifications/persistent_notification_delegate.cc

+// Copyright 2015 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/browser/notifications/persistent_notification_delegate.h"
+
+#include "base/bind.h"
+#include "content/public/browser/notification_event_dispatcher.h"
+
+namespace content {
+namespace {
+
+// Persistent notifications fired through the delegate do not care about the
+// lifetime of the Service Worker responsible for executing the event.
+void OnEventDispatchComplete(content::PersistentNotificationStatus status) {
+  // TODO(peter): Record UMA statistics about the result status of running
+  // events for persistent Web Notifications.
+}
+
+}  // namespace
+
+PersistentNotificationDelegate::PersistentNotificationDelegate(
+    BrowserContext* browser_context,
+    const GURL& origin,
+    int64_t persistent_notification_id)
+    : browser_context_(browser_context),
+      origin_(origin),
+      persistent_notification_id_(persistent_notification_id) {
+}
+
+PersistentNotificationDelegate::~PersistentNotificationDelegate() {
+}
+
+void PersistentNotificationDelegate::Close(bool by_user) {
+  // TODO(peter): Implement this method after the following CL lands:
+  // https://codereview.chromium.org/1071773003/
+}
+
+bool PersistentNotificationDelegate::HasClickedListener() {
+  return true;
+}
+
+void PersistentNotificationDelegate::Click() {
+  NotificationEventDispatcher::GetInstance()
+      ->DispatchNotificationClickEvent(browser_context_,
+                                       persistent_notification_id_,
+                                       origin_,
+                                       base::Bind(&OnEventDispatchComplete));
+}
+
+}  // namespace content