diff -r 000000000000 -r 6474c204b198 dom/indexedDB/IDBEvents.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/indexedDB/IDBEvents.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* -*- 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/. */
+
+#include "IDBEvents.h"
+
+#include "nsJSON.h"
+#include "nsThreadUtils.h"
+
+#include "IDBRequest.h"
+#include "IDBTransaction.h"
+
+USING_INDEXEDDB_NAMESPACE
+using namespace mozilla::dom;
+
+namespace {
+
+class EventFiringRunnable : public nsRunnable
+{
+public:
+  EventFiringRunnable(EventTarget* aTarget,
+                      nsIDOMEvent* aEvent)
+  : mTarget(aTarget), mEvent(aEvent)
+  { }
+
+  NS_IMETHOD Run() {
+    bool dummy;
+    return mTarget->DispatchEvent(mEvent, &dummy);
+  }
+
+private:
+  nsCOMPtr<EventTarget> mTarget;
+  nsCOMPtr<nsIDOMEvent> mEvent;
+};
+
+} // anonymous namespace
+
+already_AddRefed<nsIDOMEvent>
+mozilla::dom::indexedDB::CreateGenericEvent(mozilla::dom::EventTarget* aOwner,
+                                            const nsAString& aType,
+                                            Bubbles aBubbles,
+                                            Cancelable aCancelable)
+{
+  nsCOMPtr<nsIDOMEvent> event;
+  NS_NewDOMEvent(getter_AddRefs(event), aOwner, nullptr, nullptr);
+  nsresult rv = event->InitEvent(aType,
+                                 aBubbles == eDoesBubble ? true : false,
+                                 aCancelable == eCancelable ? true : false);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  event->SetTrusted(true);
+
+  return event.forget();
+}
+
+// static
+already_AddRefed<IDBVersionChangeEvent>
+IDBVersionChangeEvent::CreateInternal(mozilla::dom::EventTarget* aOwner,
+                                      const nsAString& aType,
+                                      uint64_t aOldVersion,
+                                      uint64_t aNewVersion)
+{
+  nsRefPtr<IDBVersionChangeEvent> event(new IDBVersionChangeEvent(aOwner));
+
+  nsresult rv = event->InitEvent(aType, false, false);
+  NS_ENSURE_SUCCESS(rv, nullptr);
+
+  event->SetTrusted(true);
+
+  event->mOldVersion = aOldVersion;
+  event->mNewVersion = aNewVersion;
+
+  return event.forget();
+}
+
+// static
+already_AddRefed<nsIRunnable>
+IDBVersionChangeEvent::CreateRunnableInternal(mozilla::dom::EventTarget* aTarget,
+                                              const nsAString& aType,
+                                              uint64_t aOldVersion,
+                                              uint64_t aNewVersion)
+{
+  nsRefPtr<Event> event =
+    CreateInternal(aTarget, aType, aOldVersion, aNewVersion);
+  NS_ENSURE_TRUE(event, nullptr);
+
+  nsCOMPtr<nsIRunnable> runnable(new EventFiringRunnable(aTarget, event));
+  return runnable.forget();
+}
+
+NS_IMPL_ADDREF_INHERITED(IDBVersionChangeEvent, Event)
+NS_IMPL_RELEASE_INHERITED(IDBVersionChangeEvent, Event)
+
+NS_INTERFACE_MAP_BEGIN(IDBVersionChangeEvent)
+  NS_INTERFACE_MAP_ENTRY(IDBVersionChangeEvent)
+NS_INTERFACE_MAP_END_INHERITING(Event)