Use unique_ptr for Create{ServiceWorkerNetworkProvider,ApplicationCacheHost}

content/renderer/service_worker/service_worker_context_client.h

Index: content/renderer/service_worker/service_worker_context_client.h
diff --git a/content/renderer/service_worker/service_worker_context_client.h b/content/renderer/service_worker/service_worker_context_client.h
index 98d5c98dd4eca7846249626297eaf36b0110fe2c..5ff56be98d93bacb76489b23018ee01f72d5a3f1 100644
--- a/content/renderer/service_worker/service_worker_context_client.h
+++ b/content/renderer/service_worker/service_worker_context_client.h
@@ -196,11 +196,12 @@ class ServiceWorkerContextClient : public blink::WebServiceWorkerContextClient,
                                     double dispatch_event_time) override;
 
   // Called on the main thread.
-  blink::WebServiceWorkerNetworkProvider* CreateServiceWorkerNetworkProvider()
-      override;
+  std::unique_ptr<blink::WebServiceWorkerNetworkProvider>
+  CreateServiceWorkerNetworkProvider() override;
   std::unique_ptr<blink::WebWorkerFetchContext>
   CreateServiceWorkerFetchContext() override;
-  blink::WebServiceWorkerProvider* CreateServiceWorkerProvider() override;
+  std::unique_ptr<blink::WebServiceWorkerProvider> CreateServiceWorkerProvider()
+      override;
 
   void PostMessageToClient(const blink::WebString& uuid,
                            const blink::WebString& message,