--- a/dom/base/GroupedSHistory.cpp
+++ b/dom/base/GroupedSHistory.cpp
@@ -1,15 +1,17 @@
 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=8 sts=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 "GroupedSHistory.h"
+
+#include "mozilla/dom/Promise.h"
 #include "TabParent.h"
 #include "PartialSHistory.h"
 
 namespace mozilla {
 namespace dom {
 
 NS_IMPL_CYCLE_COLLECTION_CLASS(GroupedSHistory)
 

--- a/dom/base/GroupedSHistory.h
+++ b/dom/base/GroupedSHistory.h
@@ -6,16 +6,19 @@
 
 #ifndef GroupedSHistory_h
 #define GroupedSHistory_h
 
 #include "nsIFrameLoader.h"
 #include "nsIGroupedSHistory.h"
 #include "nsIPartialSHistory.h"
 #include "nsTArray.h"
+#include "nsCOMArray.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
 #include "nsWeakReference.h"
 
 namespace mozilla {
 namespace dom {
 
 
 /**
  * GroupedSHistory connects session histories across multiple frameloaders.