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

content/renderer/service_worker/service_worker_context_message_filter.h

Index: content/renderer/service_worker/service_worker_context_message_filter.h
diff --git a/content/renderer/service_worker/service_worker_context_message_filter.h b/content/renderer/service_worker/service_worker_context_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..335cc6732cb44edf96fda3829ded1e418e26f82a
--- /dev/null
+++ b/content/renderer/service_worker/service_worker_context_message_filter.h
@@ -0,0 +1,31 @@
+// 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_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_MESSAGE_FILTER_H_
+#define CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_MESSAGE_FILTER_H_
+
+#include "content/child/cross_thread_message_filter.h"
+
+namespace content {
+
+// Dispatches message to each ServiceWorker's worker context.

[michaeln, 2013/11/13 00:31:37]

I see this cl depends on the CrossThreadMessageFilter (aka
ChildThreadMessageFilter).

+class ServiceWorkerContextMessageFilter : public CrossThreadMessageFilter {
+ public:
+  ServiceWorkerContextMessageFilter();
+
+ protected:
+  virtual ~ServiceWorkerContextMessageFilter();
+
+ private:
+  // CrossThreadMessageFilter implementation:
+  virtual bool CanHandleMessage(const IPC::Message& msg) OVERRIDE;
+  virtual void OnMessageReceivedOnTargetThread(
+      const IPC::Message& msg) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextMessageFilter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_MESSAGE_FILTER_H_