ServiceWorker: Send state change events via SWProviderHost

content/browser/service_worker/service_worker_handle.h

Index: content/browser/service_worker/service_worker_handle.h
diff --git a/content/browser/service_worker/service_worker_handle.h b/content/browser/service_worker/service_worker_handle.h
index 5d202fac22051510ab0a22a65af24ca5b3195d90..1de8155ec6f16cf19a7f0e0f36ae3b520314b8fe 100644
--- a/content/browser/service_worker/service_worker_handle.h
+++ b/content/browser/service_worker/service_worker_handle.h
@@ -33,15 +33,13 @@ class CONTENT_EXPORT ServiceWorkerHandle
   // 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;
@@ -61,7 +59,7 @@ class CONTENT_EXPORT ServiceWorkerHandle
 
  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_;