Implement the PageNotificationDelegate for the new Web Notification path.

content/child/notifications/notification_manager.cc

Index: content/child/notifications/notification_manager.cc
diff --git a/content/child/notifications/notification_manager.cc b/content/child/notifications/notification_manager.cc
index 4c18798ac094ce53f8431ab98499592703faaea7..9271f877e4940cf4aeac20a43a2b3db0792a476a 100644
--- a/content/child/notifications/notification_manager.cc
+++ b/content/child/notifications/notification_manager.cc
@@ -128,8 +128,49 @@ WebNotificationPermission NotificationManager::checkPermission(
 }
 
 bool NotificationManager::OnMessageReceived(const IPC::Message& message) {
-  // TODO(peter): Implement the message handlers for browser -> renderer events.
-  return false;
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(NotificationManager, message)
+    IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidShow, OnShow);
+    IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidError, OnError);
+    IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidClose, OnClose);
+    IPC_MESSAGE_HANDLER(PlatformNotificationMsg_DidClick, OnClick);
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  return handled;
+}
+
+void NotificationManager::OnShow(int id) {
+  const auto& iter = active_notifications_.find(id);
+  if (iter == active_notifications_.end())
+    return;
+
+  iter->second->dispatchShowEvent();
+}
+
+void NotificationManager::OnError(int id) {
+  const auto& iter = active_notifications_.find(id);
+  if (iter == active_notifications_.end())
+    return;
+
+  iter->second->dispatchErrorEvent();
+}
+
+void NotificationManager::OnClose(int id) {
+  const auto& iter = active_notifications_.find(id);
+  if (iter == active_notifications_.end())
+    return;
+
+  iter->second->dispatchCloseEvent();
+  active_notifications_.erase(iter);
+}
+
+void NotificationManager::OnClick(int id) {
+  const auto& iter = active_notifications_.find(id);
+  if (iter == active_notifications_.end())
+    return;
+
+  iter->second->dispatchClickEvent();
 }
 
 }  // namespace content