Skip foreign fetch when the skipServiceWorker flag is set on a request.

content/common/resource_request.h

Index: content/common/resource_request.h
diff --git a/content/common/resource_request.h b/content/common/resource_request.h
index c7b158f46af73ed0fff920e6c197826537c18e01..2e5161e320b684d97a884484fe2ecaecf7722b4b 100644
--- a/content/common/resource_request.h
+++ b/content/common/resource_request.h
@@ -93,8 +93,8 @@ struct CONTENT_EXPORT ResourceRequest {
   // fetch() in the Service Worker script.
   bool originated_from_service_worker = false;
 
-  // True if the request should not be handled by the ServiceWorker.
-  bool skip_service_worker = false;
+  // Whether or not the request should be handled by a ServiceWorker.
+  SkipServiceWorker skip_service_worker = SkipServiceWorker::NONE;
 
   // The request mode passed to the ServiceWorker.
   FetchRequestMode fetch_request_mode = FETCH_REQUEST_MODE_SAME_ORIGIN;