Dispatch push event to worker from PushServiceImpl#OnMessage.

content/browser/push_messaging_router_impl.h

+// Copyright 2014 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 CONTENT_BROWSER_PUSH_MESSAGING_ROUTER_IMPL_H_
+#define CONTENT_BROWSER_PUSH_MESSAGING_ROUTER_IMPL_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "content/common/service_worker/service_worker_status_code.h"
+#include "content/public/browser/push_messaging_router.h"
+
+namespace content {
+
+class BrowserContext;
+class ServiceWorkerContextWrapper;
+class ServiceWorkerRegistration;
+struct PushMessagingApplicationId;
+
+class PushMessagingRouterImpl : public PushMessagingRouter {
+ public:
+  // PushMessagingRouter implementation.
+  virtual void SendMessage(
+      const PushMessagingApplicationId& application_id,
+      const std::string& data,
+      const SendMessageCallback& send_message_callback) OVERRIDE;
+
+  explicit PushMessagingRouterImpl(BrowserContext* browser_context);

[johnme, 2014/07/23 14:25:23]

I'd suggest to either make this constructor private or remove the static Create
method; it's confusing having two ways to instantiate this.

[Michael van Ouwerkerk, 2014/07/23 16:57:52]

The PushMessagingRouterImpl constructor does need to be public so that
PushMessagingRouter::Create can call it. PushMessagingRouter is in the public
content API, PushMessagingRouterImpl is not. So this constructor is invisible
outside of the content layer. I think this is how the pattern is supposed to be.

+  virtual ~PushMessagingRouterImpl();
+
+ private:
+  // Attempts to find a Service Worker registration for |application_id| so that
+  // a message can be dispatched. Must be called on the IO thread.
+  void FindServiceWorkerRegistration(
+      const PushMessagingApplicationId& application_id,
+      const std::string& data,
+      const SendMessageCallback& send_message_callback,
+      scoped_refptr<ServiceWorkerContextWrapper> service_worker_context);
+
+  // Sends the message if a registration was found. Must be called on the IO
+  // thread.
+  void FindServiceWorkerRegistrationCallback(
+      const PushMessagingApplicationId& application_id,
+      const std::string& data,
+      const SendMessageCallback& send_message_callback,
+      ServiceWorkerStatusCode service_worker_status,
+      const scoped_refptr<ServiceWorkerRegistration>&
+          service_worker_registration);
+
+  // Sends a push message with |data| to the Service Worker identified by
+  // |service_worker_registration|. Must be called on the IO thread.
+  void DoSendMessage(const std::string& data,
+                     const SendMessageCallback& send_message_callback,
+                     const scoped_refptr<ServiceWorkerRegistration>&
+                         service_worker_registration);
+
+  // Gets called asynchronously after the Service Worker has dispatched the push
+  // event. Must be called on the IO thread.
+  void SendMessageEnd(const SendMessageCallback& send_message_callback,
+                      const scoped_refptr<ServiceWorkerRegistration>&
+                          service_worker_registration,
+                      ServiceWorkerStatusCode service_worker_status);
+
+  BrowserContext* browser_context_;  // It indirectly owns this.
+
+  base::WeakPtrFactory<PushMessagingRouterImpl> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(PushMessagingRouterImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_PUSH_MESSAGING_ROUTER_IMPL_H_