diff -r 000000000000 -r 6474c204b198 dom/datastore/DataStore.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/datastore/DataStore.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,95 @@
+/* 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_DataStore_h
+#define mozilla_dom_DataStore_h
+
+#include "mozilla/DOMEventTargetHelper.h"
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+class Promise;
+class DataStoreCursor;
+class DataStoreImpl;
+class StringOrUnsignedLong;
+class OwningStringOrUnsignedLong;
+
+class DataStore MOZ_FINAL : public DOMEventTargetHelper
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DataStore,
+                                           DOMEventTargetHelper)
+
+  explicit DataStore(nsPIDOMWindow* aWindow);
+
+  // WebIDL (internal functions)
+
+  static already_AddRefed<DataStore> Constructor(GlobalObject& aGlobal,
+                                                 ErrorResult& aRv);
+
+  virtual JSObject* WrapObject(JSContext *aCx) MOZ_OVERRIDE;
+
+  static bool EnabledForScope(JSContext* aCx, JS::Handle<JSObject*> aObj);
+
+  // WebIDL (public APIs)
+
+  void GetName(nsAString& aName, ErrorResult& aRv);
+
+  void GetOwner(nsAString& aOwner, ErrorResult& aRv);
+
+  bool GetReadOnly(ErrorResult& aRv);
+
+  already_AddRefed<Promise> Get(const Sequence<OwningStringOrUnsignedLong>& aId,
+                                ErrorResult& aRv);
+
+  already_AddRefed<Promise> Put(JSContext* aCx,
+                                JS::Handle<JS::Value> aObj,
+                                const StringOrUnsignedLong& aId,
+                                const nsAString& aRevisionId,
+                                ErrorResult& aRv);
+
+  already_AddRefed<Promise> Add(JSContext* aCx,
+                                JS::Handle<JS::Value> aObj,
+                                const Optional<StringOrUnsignedLong>& aId,
+                                const nsAString& aRevisionId,
+                                ErrorResult& aRv);
+
+  already_AddRefed<Promise> Remove(const StringOrUnsignedLong& aId,
+                                   const nsAString& aRevisionId,
+                                   ErrorResult& aRv);
+
+  already_AddRefed<Promise> Clear(const nsAString& aRevisionId,
+                                  ErrorResult& aRv);
+
+  void GetRevisionId(nsAString& aRevisionId, ErrorResult& aRv);
+
+  already_AddRefed<Promise> GetLength(ErrorResult& aRv);
+
+  already_AddRefed<DataStoreCursor> Sync(const nsAString& aRevisionId,
+                                         ErrorResult& aRv);
+
+  IMPL_EVENT_HANDLER(change)
+
+  // This internal function (ChromeOnly) is aimed to make the DataStore keep a
+  // reference to the DataStoreImpl which really implements the API's logic in
+  // JS. We also need to let the DataStoreImpl implementation keep the event
+  // target of DataStore, so that it can know where to fire the events.
+  void SetDataStoreImpl(DataStoreImpl& aStore, ErrorResult& aRv);
+
+protected:
+  virtual ~DataStore() {}
+
+private:
+  nsRefPtr<DataStoreImpl> mStore;
+};
+
+} //namespace dom
+} //namespace mozilla
+
+#endif
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