Fill in some of ServiceWorkerFetchStores.

content/browser/service_worker/service_worker_fetch_stores_manager.cc

Index: content/browser/service_worker/service_worker_fetch_stores_manager.cc
diff --git a/content/browser/service_worker/service_worker_fetch_stores_manager.cc b/content/browser/service_worker/service_worker_fetch_stores_manager.cc
index 2fe44f21e5e25c22a386633581d80cd2f75780c1..a2b494bbeaffced256966409bbcc9cac178e3a4d 100644
--- a/content/browser/service_worker/service_worker_fetch_stores_manager.cc
+++ b/content/browser/service_worker/service_worker_fetch_stores_manager.cc
@@ -113,7 +113,7 @@ void ServiceWorkerFetchStoresManager::Has(
 void ServiceWorkerFetchStoresManager::Delete(
     const GURL& origin,
     const std::string& key,
-    const ServiceWorkerFetchStores::StoreAndErrorCallback& callback) {
+    const ServiceWorkerFetchStores::BoolAndErrorCallback& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   ServiceWorkerFetchStores* stores =
@@ -148,16 +148,15 @@ ServiceWorkerFetchStoresManager::ServiceWorkerFetchStoresManager(
 ServiceWorkerFetchStores*
 ServiceWorkerFetchStoresManager::FindOrCreateServiceWorkerFetchStores(
     const GURL& origin) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
   ServiceWorkerFetchStoresMap::const_iterator it =
       service_worker_fetch_stores_.find(origin);
   if (it == service_worker_fetch_stores_.end()) {
-    ServiceWorkerFetchStores::BackendType backend =
-        root_path_.empty()
-            ? ServiceWorkerFetchStores::BACKEND_TYPE_MEMORY
-            : ServiceWorkerFetchStores::BACKEND_TYPE_SIMPLE_CACHE;
+    bool memory_only = root_path_.empty();
     ServiceWorkerFetchStores* fetch_stores =
         new ServiceWorkerFetchStores(ConstructOriginPath(root_path_, origin),
-                                     backend,
+                                     memory_only,
                                      base::MessageLoopProxy::current());
     // The map owns fetch_stores.
     service_worker_fetch_stores_.insert(std::make_pair(origin, fetch_stores));