Revert "Create ServiceWorkerProviderHost before starting worker"

content/common/service_worker/service_worker_types.mojom

Index: content/common/service_worker/service_worker_types.mojom
diff --git a/content/common/service_worker/service_worker_types.mojom b/content/common/service_worker/service_worker_types.mojom
index 9aa4bf08e571bd829af5a740691711e344b075b6..1094171758de4bcf5cb220a61d66f980b8c1bdd6 100644
--- a/content/common/service_worker/service_worker_types.mojom
+++ b/content/common/service_worker/service_worker_types.mojom
@@ -17,15 +17,4 @@ enum ServiceWorkerProviderType {
 
   SERVICE_WORKER_PROVIDER_TYPE_LAST =
       SERVICE_WORKER_PROVIDER_FOR_CONTROLLER
-};
-
-// Container for delivering the information about the ServiceWorkerRegistration.
-// Defined in service_worker_types.h.
-[Native]
-struct ServiceWorkerRegistrationObjectInfo;
-
-// Container for delivering the information about the installing, waiting and
-// active ServiceWorkers.
-// Defined in service_worker_types.h.
-[Native]
-struct ServiceWorkerVersionAttributes;
+};