Populate .current when navigator.serviceWorker is accessed

content/child/service_worker/service_worker_network_provider.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_CHILD_SERVICE_WORKER_SERVICE_WORKER_NETWORK_PROVIDER_IMPL_H_
 #define CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_NETWORK_PROVIDER_IMPL_H_
 
 #include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/supports_user_data.h"
 #include "content/common/content_export.h"
 
 namespace content {
 
+class ServiceWorkerProviderContext;
+
 // A unique provider_id is generated for each instance.
 // Instantiated prior to the main resource load being started and remains
 // allocated until after the last subresource load has occurred.
 // This is used to track the lifetime of a Document to create
 // and dispose the ServiceWorkerProviderHost in the browser process
 // to match its lifetime. Each request coming from the Document is
 // tagged with this id in willSendRequest.
 //
 // Basically, it's a scoped integer that sends an ipc upon construction
 // and destruction.
 class CONTENT_EXPORT ServiceWorkerNetworkProvider
     : public base::SupportsUserData::Data {
  public:
   // Ownership is transferred to the DocumentState.
   static void AttachToDocumentState(
       base::SupportsUserData* document_state,
       scoped_ptr<ServiceWorkerNetworkProvider> network_provider);
 
   static ServiceWorkerNetworkProvider* FromDocumentState(
       base::SupportsUserData* document_state);
 
   ServiceWorkerNetworkProvider();
   virtual ~ServiceWorkerNetworkProvider();
 
   int provider_id() const { return provider_id_; }
+  ServiceWorkerProviderContext* context() { return context_.get(); }
 
   // This method is called for a provider that's associated with a
   // running service worker script. The version_id indicates which
   // ServiceWorkerVersion should be used.
   void SetServiceWorkerVersionId(int64 version_id);
 
  private:
   const int provider_id_;
+  scoped_refptr<ServiceWorkerProviderContext> context_;
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerNetworkProvider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_PROVIDER_IMPL_H_