ServiceWorker: Run ServiceWorkerContextTest.DeleteAndStartOver on disk

content/browser/service_worker/embedded_worker_test_helper.h

Index: content/browser/service_worker/embedded_worker_test_helper.h
diff --git a/content/browser/service_worker/embedded_worker_test_helper.h b/content/browser/service_worker/embedded_worker_test_helper.h
index fe1a16e56e9297f542b72c359107f36397f2dfe2..c81d191bb9c39aec2562bcb7b1e6e53e809422e5 100644
--- a/content/browser/service_worker/embedded_worker_test_helper.h
+++ b/content/browser/service_worker/embedded_worker_test_helper.h
@@ -44,8 +44,10 @@ class EmbeddedWorkerTestHelper : public IPC::Sender,
                                  public IPC::Listener {
  public:
   // Initialize this helper for |context|, and enable this as an IPC
-  // sender for |mock_render_process_id|.
-  explicit EmbeddedWorkerTestHelper(int mock_render_process_id);
+  // sender for |mock_render_process_id|. If |user_data_directory| is empty,
+  // the context makes storage stuff in memory.
+  EmbeddedWorkerTestHelper(const base::FilePath& user_data_directory,
+                           int mock_render_process_id);
   ~EmbeddedWorkerTestHelper() override;
 
   // Call this to simulate add/associate a process to a pattern.