Add the beginning of a public Service Worker API.

content/browser/service_worker/service_worker_internals_ui.cc

Index: content/browser/service_worker/service_worker_internals_ui.cc
diff --git a/content/browser/service_worker/service_worker_internals_ui.cc b/content/browser/service_worker/service_worker_internals_ui.cc
index 1836e109bdc3c757e46d05f86c3859fd42b3e331..18fef0805ab1afe9e36025a86df02b2beb3760d3 100644
--- a/content/browser/service_worker/service_worker_internals_ui.cc
+++ b/content/browser/service_worker/service_worker_internals_ui.cc
@@ -124,7 +124,8 @@ void ServiceWorkerInternalsUI::GetAllRegistrations(const ListValue* args) {
 void ServiceWorkerInternalsUI::AddContextFromStoragePartition(
     StoragePartition* partition) {
   scoped_refptr<ServiceWorkerContextWrapper> context =
-      partition->GetServiceWorkerContext();
+      static_cast<ServiceWorkerContextWrapper*>(
+          partition->GetServiceWorkerContext());
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
@@ -142,7 +143,8 @@ void FindContext(const base::FilePath& partition_path,
                  StoragePartition* storage_partition) {
   if (storage_partition->GetPath() == partition_path) {
     *result_partition = storage_partition;
-    *result_context = storage_partition->GetServiceWorkerContext();
+    *result_context = static_cast<ServiceWorkerContextWrapper*>(
+        storage_partition->GetServiceWorkerContext());
   }
 }
 }  // namespace