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

content/browser/service_worker/service_worker_context_wrapper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 64 matching lines @@
     ServiceWorkerStatusCode status,
     scoped_refptr<ServiceWorkerRegistration> registration) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (status != SERVICE_WORKER_OK || !registration->waiting_version())
     return;
 
   registration->waiting_version()->set_skip_waiting(true);
   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(
     const std::set<std::string>& header_names) {
   // TODO(pkasting): Remove ScopedTracker below once crbug.com/477117 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "477117 ServiceWorkerContext::AddExcludedHeadersForFetchEvent"));
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   g_excluded_header_name_set.Get().insert(header_names.begin(),
@@ skipping 739 matching lines @@
     int64_t service_worker_version_id,
     const std::string& request_uuid) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   ServiceWorkerVersion* version =
       context()->GetLiveVersion(service_worker_version_id);
   if (!version)
     return false;
   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);
   if (status != SERVICE_WORKER_OK) {
     context_core_.reset();
     return;
   }
   context_core_.reset(new ServiceWorkerContextCore(context_core_.get(), this));
   DVLOG(1) << "Restarted ServiceWorkerContextCore successfully.";
   context_core_->OnStorageWiped();
@@ skipping 105 matching lines @@
                                     service_worker_provider_id,
                                     std::move(client_ptr_info));
 }
 
 ServiceWorkerContextCore* ServiceWorkerContextWrapper::context() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   return context_core_.get();
 }
 
 }  // namespace content