diff -r 000000000000 -r 6474c204b198 embedding/components/commandhandler/src/nsCommandGroup.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/embedding/components/commandhandler/src/nsCommandGroup.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 nsCommandGroup_h__
+#define nsCommandGroup_h__
+
+#include "nsIController.h"
+
+#include "nsHashtable.h"
+
+
+// {ecd55a01-2780-11d5-a73c-ca641a6813bc}
+#define NS_CONTROLLER_COMMAND_GROUP_CID \
+{ 0xecd55a01, 0x2780, 0x11d5, { 0xa7, 0x3c, 0xca, 0x64, 0x1a, 0x68, 0x13, 0xbc } }
+
+#define NS_CONTROLLER_COMMAND_GROUP_CONTRACTID \
+ "@mozilla.org/embedcomp/controller-command-group;1"
+
+
+class nsControllerCommandGroup : public nsIControllerCommandGroup
+{
+public:
+
+                    nsControllerCommandGroup();
+  virtual           ~nsControllerCommandGroup();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICONTROLLERCOMMANDGROUP
+
+
+protected:
+
+  void              ClearGroupsHash();
+
+protected:
+
+  static bool ClearEnumerator(nsHashKey *aKey, void *aData, void* closure);
+
+protected:
+
+  nsHashtable       mGroupsHash;    // hash keyed on command group.
+                                    // Entries are nsTArray<char*>
+                                    // This could be made more space-efficient, maybe with atoms
+  
+};
+
+
+#endif // nsCommandGroup_h__
+