[ServiceWorkerCacheStorage] Add support for new Open method.

content/browser/service_worker/service_worker_cache_listener.cc

Index: content/browser/service_worker/service_worker_cache_listener.cc
diff --git a/content/browser/service_worker/service_worker_cache_listener.cc b/content/browser/service_worker/service_worker_cache_listener.cc
index c5791fd3eebecb21d22f7fcd1645c197a7d92896..76c608420ab07e36ad2b4eae1bab3777915dd735 100644
--- a/content/browser/service_worker/service_worker_cache_listener.cc
+++ b/content/browser/service_worker/service_worker_cache_listener.cc
@@ -93,6 +93,8 @@ bool ServiceWorkerCacheListener::OnMessageReceived(
                         OnCacheStorageHas)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_CacheStorageCreate,
                         OnCacheStorageCreate)
+    IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_CacheStorageOpen,
+                        OnCacheStorageOpen)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_CacheStorageDelete,
                         OnCacheStorageDelete)
     IPC_MESSAGE_HANDLER(ServiceWorkerHostMsg_CacheStorageKeys,
@@ -153,6 +155,19 @@ void ServiceWorkerCacheListener::OnCacheStorageCreate(
                  request_id));
 }
 
+void ServiceWorkerCacheListener::OnCacheStorageOpen(
+    int request_id,
+    const base::string16& cache_name) {
+  TRACE_EVENT0("ServiceWorker",
+               "ServiceWorkerCacheListener::OnCacheStorageOpen");
+  context_->cache_manager()->OpenCache(
+      version_->scope().GetOrigin(),
+      base::UTF16ToUTF8(cache_name),
+      base::Bind(&ServiceWorkerCacheListener::OnCacheStorageOpenCallback,
+                 weak_factory_.GetWeakPtr(),
+                 request_id));
+}
+
 void ServiceWorkerCacheListener::OnCacheStorageDelete(
     int request_id,
     const base::string16& cache_name) {
@@ -344,6 +359,19 @@ void ServiceWorkerCacheListener::OnCacheStorageCreateCallback(
   Send(ServiceWorkerMsg_CacheStorageCreateSuccess(request_id, cache_id));
 }
 
+void ServiceWorkerCacheListener::OnCacheStorageOpenCallback(
+    int request_id,
+    const scoped_refptr<ServiceWorkerCache>& cache,
+    ServiceWorkerCacheStorage::CacheStorageError error) {
+  if (error != ServiceWorkerCacheStorage::CACHE_STORAGE_ERROR_NO_ERROR) {
+    Send(ServiceWorkerMsg_CacheStorageOpenError(
+        request_id, ToWebServiceWorkerCacheError(error)));
+    return;
+  }
+  CacheID cache_id = StoreCacheReference(cache);
+  Send(ServiceWorkerMsg_CacheStorageOpenSuccess(request_id, cache_id));
+}
+
 void ServiceWorkerCacheListener::OnCacheStorageDeleteCallback(
     int request_id,
     bool deleted,