Add a status code to install event handled message from Service Worker

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 b52dd9ebe5772d1d1d532054c3a2122000eebe0b..c75d0d99d90f9e903d0e4b49c2813034f9676e87 100644
--- a/content/common/service_worker/service_worker_types.h
+++ b/content/common/service_worker/service_worker_types.h
@@ -24,6 +24,16 @@ const static int kInvalidServiceWorkerRequestId = -1;
 
 const static int kInvalidServiceWorkerProviderId = -1;
 
+// Indicates how the service worker handled an install event.
+enum ServiceWorkerInstallEventResult {
+  // The service worker passed a promise to waitUntil that rejected.

[dominicc (has gone to gerrit), 2014/03/26 01:28:01]

that rejected -> that was rejected? Or rejected needs an object... that rejected
food?

[falken, 2014/03/26 07:53:56]

Haha, right. I actually thought this was weird too but wrote it deliberately
because the algorithms spec reads "if the resulting promise rejects..." so it
seemed like the language of promises to say a promise rejects or fulfills.
However on further research it looks like not a common usage. I revised this
comment on the Blink-side patch.

+  SERVICE_WORKER_INSTALL_EVENT_RESULT_REJECTED,
+  // The install event dispatch completed with no rejections.
+  SERVICE_WORKER_INSTALL_EVENT_RESULT_COMPLETED,
+  SERVICE_WORKER_INSTALL_EVENT_RESULT_LAST =
+      SERVICE_WORKER_INSTALL_EVENT_RESULT_COMPLETED
+};
+
 // To dispatch fetch request from browser to child process.
 // TODO(kinuko): This struct will definitely need more fields and
 // we'll probably want to have response struct/class too.