Revert "Create ServiceWorkerProviderHost before starting worker"

content/common/service_worker/service_worker_provider.mojom

Index: content/common/service_worker/service_worker_provider.mojom
diff --git a/content/common/service_worker/service_worker_provider.mojom b/content/common/service_worker/service_worker_provider.mojom
index b01b1cf20b407c65541d22ea752cd01084c0dfb3..4016e4266254d6403c1afc96329018930ed3b932 100644
--- a/content/common/service_worker/service_worker_provider.mojom
+++ b/content/common/service_worker/service_worker_provider.mojom
@@ -7,20 +7,6 @@ module content.mojom;
 import "content/common/service_worker/service_worker_provider_interfaces.mojom";
 import "content/common/service_worker/service_worker_types.mojom";
 
-// A container object carried from the browser to the renderer process.
-// This contains the params for the constructor of ServiceWorkerNetworkProvider
-// used for starting a service worker.
-struct ServiceWorkerProviderInfoForStartWorker {
-  int32 provider_id;
-  // |registration| and |attributes| are information about the service worker's
-  // registration used to populate ServiceWorkerGlobalScope#registration.
-  ServiceWorkerRegistrationObjectInfo registration;
-  ServiceWorkerVersionAttributes attributes;
-
-  associated ServiceWorkerProviderHost host_ptr_info;
-  associated ServiceWorkerProvider& client_request;
-};
-
 // A container object carried from the renderer to the browser process.
 // This contains the parameters to specify the provider on the browser side.
 // See also comments in