Initial child-process side plumbing for starting an embedded ServiceWorker context

content/renderer/service_worker/embedded_worker_dispatcher.h

+// Copyright 2013 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_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_
+#define CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_
+
+#include "base/basictypes.h"
+#include "base/id_map.h"
+#include "base/memory/weak_ptr.h"
+#include "ipc/ipc_listener.h"
+
+struct ServiceWorkerMsg_StartWorker_Params;
+class GURL;
+
+namespace WebKit {
+class WebEmbeddedWorker;
+}
+
+namespace content {
+
+// A tiny dispatcher which handles embedded worker start/stop messages.
+class EmbeddedWorkerDispatcher : public IPC::Listener {
+ public:
+  EmbeddedWorkerDispatcher();
+  virtual ~EmbeddedWorkerDispatcher();
+
+  // IPC::Listener overrides.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  void WorkerContextDestroyed(int32 embedded_worker_id);
+
+ private:
+  class WorkerWrapper;
+
+  void OnStartWorker(const ServiceWorkerMsg_StartWorker_Params& params);
+  void OnTerminateWorker(int32 embedded_worker_id);
+
+  IDMap<WorkerWrapper, IDMapOwnPointer> workers_;
+  base::WeakPtrFactory<EmbeddedWorkerDispatcher> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerDispatcher);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_DISPATCHER_H_