ServiceWorker: Create sequenced task runner for database

content/browser/service_worker/service_worker_context_core.cc

Index: content/browser/service_worker/service_worker_context_core.cc
diff --git a/content/browser/service_worker/service_worker_context_core.cc b/content/browser/service_worker/service_worker_context_core.cc
index d65466192abab5357ee87efb8a30257c520c0e9e..7a8e3860eb70646f783ac7050d15d39f5842d4cd 100644
--- a/content/browser/service_worker/service_worker_context_core.cc
+++ b/content/browser/service_worker/service_worker_context_core.cc
@@ -77,11 +77,12 @@ void ServiceWorkerContextCore::ProviderHostIterator::Initialize() {
 
 ServiceWorkerContextCore::ServiceWorkerContextCore(
     const base::FilePath& path,
+    base::SequencedTaskRunner* database_task_runner,
     quota::QuotaManagerProxy* quota_manager_proxy,
     ObserverListThreadSafe<ServiceWorkerContextObserver>* observer_list,
     scoped_ptr<ServiceWorkerProcessManager> process_manager)
-    : storage_(
-          new ServiceWorkerStorage(path, AsWeakPtr(), quota_manager_proxy)),
+    : storage_(new ServiceWorkerStorage(
+          path, AsWeakPtr(), database_task_runner, quota_manager_proxy)),
       embedded_worker_registry_(new EmbeddedWorkerRegistry(AsWeakPtr())),
       job_coordinator_(new ServiceWorkerJobCoordinator(AsWeakPtr())),
       process_manager_(process_manager.Pass()),