Add a blob field to ServiceWorkerFetchResponse and read the blob

content/common/service_worker/service_worker_types.h

Index: content/common/service_worker/service_worker_types.h
diff --git a/content/common/service_worker/service_worker_types.h b/content/common/service_worker/service_worker_types.h
index 319e2722805e280f845cda30c55118125aea71a0..eea6b47873c604d925d948297a72b7a1d529b6a3 100644
--- a/content/common/service_worker/service_worker_types.h
+++ b/content/common/service_worker/service_worker_types.h
@@ -62,13 +62,15 @@ struct CONTENT_EXPORT ServiceWorkerResponse {
   ServiceWorkerResponse(int status_code,
                         const std::string& status_text,
                         const std::string& method,
-                        const std::map<std::string, std::string>& headers);
+                        const std::map<std::string, std::string>& headers,
+                        const std::string& blob_uuid);
   ~ServiceWorkerResponse();
 
   int status_code;
   std::string status_text;
   std::string method;
   std::map<std::string, std::string> headers;
+  std::string blob_uuid;
 };
 
 // Represents initialization info for a WebServiceWorker object.