diff -r 000000000000 -r 6474c204b198 dom/datastore/DataStoreCursor.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/datastore/DataStoreCursor.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* 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 "mozilla/dom/DataStore.h"
+#include "mozilla/dom/DataStoreCursor.h"
+#include "mozilla/dom/DataStoreBinding.h"
+#include "mozilla/dom/DataStoreImplBinding.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/ErrorResult.h"
+#include "nsPIDOMWindow.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DataStoreCursor, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DataStoreCursor, Release)
+
+NS_IMPL_CYCLE_COLLECTION(DataStoreCursor, mCursor)
+
+already_AddRefed<DataStoreCursor>
+DataStoreCursor::Constructor(GlobalObject& aGlobal, ErrorResult& aRv)
+{
+  nsRefPtr<DataStoreCursor> cursor = new DataStoreCursor();
+  return cursor.forget();
+}
+
+JSObject*
+DataStoreCursor::WrapObject(JSContext* aCx)
+{
+  return DataStoreCursorBinding::Wrap(aCx, this);
+}
+
+already_AddRefed<DataStore>
+DataStoreCursor::GetStore(ErrorResult& aRv)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mCursor);
+
+  return mCursor->GetStore(aRv);
+}
+
+already_AddRefed<Promise>
+DataStoreCursor::Next(ErrorResult& aRv)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mCursor);
+
+  return mCursor->Next(aRv);
+}
+
+void
+DataStoreCursor::Close(ErrorResult& aRv)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(mCursor);
+
+  mCursor->Close(aRv);
+}
+
+void
+DataStoreCursor::SetDataStoreCursorImpl(DataStoreCursorImpl& aCursor)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(!mCursor);
+
+  mCursor = &aCursor;
+}
+
+} //namespace dom
+} //namespace mozilla
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