[extension SW] Support lazy events from extension service workers.

content/browser/service_worker/service_worker_context_wrapper.cc

Index: content/browser/service_worker/service_worker_context_wrapper.cc
diff --git a/content/browser/service_worker/service_worker_context_wrapper.cc b/content/browser/service_worker/service_worker_context_wrapper.cc
index fbb00d4fc0fd42a3bd650f6ce2cb7cc28cbcfdd0..cc57f3fb214c7e3d20c90a78b4fb2f4679529f61 100644
--- a/content/browser/service_worker/service_worker_context_wrapper.cc
+++ b/content/browser/service_worker/service_worker_context_wrapper.cc
@@ -82,6 +82,38 @@ void SkipWaitingWorkerOnIO(
   registration->ActivateWaitingVersionWhenReady();
 }
 
+void OnServiceWorkerStartedForGetWorkerInfo(
+    scoped_refptr<ServiceWorkerRegistration> service_worker_registration,
+    ServiceWorkerContext::GetWorkerInfoCallback info_callback) {
+  EmbeddedWorkerInstance* instance =
+      service_worker_registration->active_version()->embedded_worker();

[falken, 2017/06/22 03:35:57]

It'd be safer to pass the active_version directly instead of
service_worker_registration. I think there may be a remote possibility that the
registration's active version changes between StartWorker() and when this is
called.

[lazyboy, 2017/06/23 02:18:30]

Done.

+  std::move(info_callback).Run(instance->process_id(), instance->thread_id());
+}
+
+void OnServiceWorkerErrorForGetWorkerInfo(base::OnceClosure error_callback,
+                                          ServiceWorkerStatusCode code) {
+  std::move(error_callback).Run();
+}
+
+void FoundReadyRegistrationForGetWorkerInfo(
+    ServiceWorkerContext::GetWorkerInfoCallback info_callback,
+    base::OnceClosure failure_callback,
+    ServiceWorkerStatusCode service_worker_status,
+    scoped_refptr<ServiceWorkerRegistration> service_worker_registration) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (service_worker_status == SERVICE_WORKER_OK) {
+    DCHECK(service_worker_registration->active_version());
+    service_worker_registration->active_version()->RunAfterStartWorker(
+        ServiceWorkerMetrics::EventType::EXTERNAL_REQUEST,
+        base::Bind(&OnServiceWorkerStartedForGetWorkerInfo,
+                   service_worker_registration, base::Passed(&info_callback)),
+        base::Bind(&OnServiceWorkerErrorForGetWorkerInfo,
+                   base::Passed(&failure_callback)));
+  } else {
+    std::move(failure_callback).Run();
+  }
+}
+
 }  // namespace
 
 void ServiceWorkerContext::AddExcludedHeadersForFetchEvent(
@@ -841,6 +873,17 @@ bool ServiceWorkerContextWrapper::FinishedExternalRequest(
   return version->FinishExternalRequest(request_uuid);
 }
 
+void ServiceWorkerContextWrapper::GetWorkerInfoAfterStartWorker(
+    const GURL& origin,
+    GetWorkerInfoCallback info_callback,
+    base::OnceClosure failure_callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  FindReadyRegistrationForPattern(
+      origin, base::Bind(&FoundReadyRegistrationForGetWorkerInfo,
+                         base::Passed(&info_callback),
+                         base::Passed(&failure_callback)));
+}
+
 void ServiceWorkerContextWrapper::DidDeleteAndStartOver(
     ServiceWorkerStatusCode status) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);