ServiceWorker: Send state change events via SWProviderHost

content/browser/service_worker/service_worker_handle.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_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 15 matching lines @@
 // (WebServiceWorkerImpl).
 // Has references to the corresponding ServiceWorkerVersion and
 // ServiceWorkerRegistration (therefore they're guaranteed to be alive while
 // this handle is around).
 class CONTENT_EXPORT ServiceWorkerHandle
     : NON_EXPORTED_BASE(public ServiceWorkerVersion::Listener) {
  public:
   // Creates a handle for a live version. The version's corresponding
   // registration must be also alive.
   // This may return NULL if |context|.get() or |version| is NULL.
-  // |sender| will be used to send messages to the corresponding
-  // WebServiceWorkerImpl in the child process.
   static scoped_ptr<ServiceWorkerHandle> Create(
       base::WeakPtr<ServiceWorkerContextCore> context,
-      IPC::Sender* sender,
+      base::WeakPtr<ServiceWorkerProviderHost> provider_host,
       ServiceWorkerVersion* version);
 
   ServiceWorkerHandle(base::WeakPtr<ServiceWorkerContextCore> context,
-                      IPC::Sender* sender,
+                      base::WeakPtr<ServiceWorkerProviderHost> provider_host,
                       ServiceWorkerRegistration* registration,
                       ServiceWorkerVersion* version);
   ~ServiceWorkerHandle() override;
 
   // ServiceWorkerVersion::Listener overrides.
   void OnVersionStateChanged(ServiceWorkerVersion* version) override;
 
   ServiceWorkerObjectInfo GetObjectInfo();
 
   int handle_id() const { return handle_id_; }
   ServiceWorkerRegistration* registration() { return registration_.get(); }
   ServiceWorkerVersion* version() { return version_.get(); }
 
   bool HasNoRefCount() const { return ref_count_ <= 0; }
   void IncrementRefCount();
   void DecrementRefCount();
 
  private:
   base::WeakPtr<ServiceWorkerContextCore> context_;
-  IPC::Sender* sender_;  // Not owned, it should always outlive this.
+  base::WeakPtr<ServiceWorkerProviderHost> provider_host_;
   const int handle_id_;
   int ref_count_;  // Created with 1.
   scoped_refptr<ServiceWorkerRegistration> registration_;
   scoped_refptr<ServiceWorkerVersion> version_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandle);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_