Add IPC stubs between browser and ServiceWorker's worker context in the child process

content/renderer/service_worker/service_worker_context_client.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_CLIENT_H_
 #define CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "ipc/ipc_listener.h"
 #include "third_party/WebKit/public/web/WebServiceWorkerContextClient.h"
 #include "url/gurl.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace content {
 
+struct ServiceWorkerFetchRequest;
 class ThreadSafeSender;
 
 // This class provides access to/from an embedded worker's WorkerGlobalScope.
 // All methods other than the constructor (it's created on the main thread)
 // are called on the worker thread.
 class ServiceWorkerContextClient
     : public blink::WebServiceWorkerContextClient {
  public:
   // Returns a thread-specific client instance.  This does NOT create a
   // new instance.
@@ skipping 10 matching lines @@
   // WebServiceWorkerContextClient overrides.
   virtual void workerContextFailedToStart();
   virtual void workerContextStarted(blink::WebServiceWorkerContextProxy* proxy);
   virtual void workerContextDestroyed();
 
   // TODO: Implement DevTools related method overrides.
 
   int embedded_worker_id() const { return embedded_worker_id_; }
 
  private:
+  void OnFetchEvent(int thread_id,
+                    int embedded_worker_id,
+                    const ServiceWorkerFetchRequest& request);
+
   const int embedded_worker_id_;
   const int64 service_worker_version_id_;
   const GURL script_url_;
   scoped_refptr<ThreadSafeSender> sender_;
   scoped_refptr<base::MessageLoopProxy> main_thread_proxy_;
 
   blink::WebServiceWorkerContextProxy* proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_