diff -r 000000000000 -r 6474c204b198 dom/indexedDB/CheckPermissionsHelper.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/indexedDB/CheckPermissionsHelper.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_indexeddb_checkpermissionshelper_h__
+#define mozilla_dom_indexeddb_checkpermissionshelper_h__
+
+// Only meant to be included in IndexedDB source files, not exported.
+#include "OpenDatabaseHelper.h"
+
+#include "nsIInterfaceRequestor.h"
+#include "nsIObserver.h"
+#include "nsIRunnable.h"
+
+class nsIDOMWindow;
+class nsIThread;
+
+BEGIN_INDEXEDDB_NAMESPACE
+
+class CheckPermissionsHelper MOZ_FINAL : public nsIRunnable,
+                                         public nsIInterfaceRequestor,
+                                         public nsIObserver
+{
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIRUNNABLE
+  NS_DECL_NSIINTERFACEREQUESTOR
+  NS_DECL_NSIOBSERVER
+
+  CheckPermissionsHelper(OpenDatabaseHelper* aHelper,
+                         nsIDOMWindow* aWindow)
+  : mHelper(aHelper),
+    mWindow(aWindow),
+    // If we're trying to delete the database, we should never prompt the user.
+    // Anything that would prompt is translated to denied.
+    mPromptAllowed(!aHelper->mForDeletion),
+    mHasPrompted(false),
+    mPromptResult(0)
+  {
+    NS_ASSERTION(aHelper, "Null pointer!");
+    NS_ASSERTION(aHelper->mPersistenceType == quota::PERSISTENCE_TYPE_PERSISTENT,
+                 "Checking permission for non persistent databases?!");
+  }
+
+private:
+  nsRefPtr<OpenDatabaseHelper> mHelper;
+  nsCOMPtr<nsIDOMWindow> mWindow;
+  bool mPromptAllowed;
+  bool mHasPrompted;
+  uint32_t mPromptResult;
+};
+
+END_INDEXEDDB_NAMESPACE
+
+#endif // mozilla_dom_indexeddb_checkpermissionshelper_h__