diff -r 000000000000 -r 6474c204b198 dom/activities/src/Activity.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/activities/src/Activity.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,58 @@
+/* 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_activities_Activity_h
+#define mozilla_dom_activities_Activity_h
+
+#include "DOMRequest.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/MozActivityBinding.h"
+#include "nsIActivityProxy.h"
+#include "mozilla/Preferences.h"
+#include "nsPIDOMWindow.h"
+
+namespace mozilla {
+namespace dom {
+
+class Activity : public DOMRequest
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(Activity, DOMRequest)
+
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
+
+  static already_AddRefed<Activity>
+  Constructor(const GlobalObject& aOwner,
+              JSContext* aCx,
+              const ActivityOptions& aOptions,
+              ErrorResult& aRv)
+  {
+    nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aOwner.GetAsSupports());
+    if (!window) {
+      aRv.Throw(NS_ERROR_UNEXPECTED);
+      return nullptr;
+    }
+
+    nsRefPtr<Activity> activity = new Activity(window);
+    aRv = activity->Initialize(window, aCx, aOptions);
+    return activity.forget();
+  }
+
+  Activity(nsPIDOMWindow* aWindow);
+
+protected:
+  nsresult Initialize(nsPIDOMWindow* aWindow,
+                      JSContext* aCx,
+                      const ActivityOptions& aOptions);
+
+  nsCOMPtr<nsIActivityProxy> mProxy;
+
+  ~Activity();
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_activities_Activity_h