diff -r 000000000000 -r 6474c204b198 browser/components/dirprovider/DirectoryProvider.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/dirprovider/DirectoryProvider.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,47 @@
+/* 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 DirectoryProvider_h__
+#define DirectoryProvider_h__
+
+#include "nsIDirectoryService.h"
+#include "nsComponentManagerUtils.h"
+#include "nsISimpleEnumerator.h"
+#include "nsIFile.h"
+#include "mozilla/Attributes.h"
+
+#define NS_BROWSERDIRECTORYPROVIDER_CONTRACTID \
+  "@mozilla.org/browser/directory-provider;1"
+
+namespace mozilla {
+namespace browser {
+
+class DirectoryProvider MOZ_FINAL : public nsIDirectoryServiceProvider2
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDIRECTORYSERVICEPROVIDER
+  NS_DECL_NSIDIRECTORYSERVICEPROVIDER2
+
+private:
+  class AppendingEnumerator MOZ_FINAL : public nsISimpleEnumerator
+  {
+  public:
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSISIMPLEENUMERATOR
+
+    AppendingEnumerator(nsISimpleEnumerator* aBase,
+                        char const *const *aAppendList);
+
+  private:
+    nsCOMPtr<nsISimpleEnumerator> mBase;
+    char const *const *const      mAppendList;
+    nsCOMPtr<nsIFile>             mNext;
+  };
+};
+
+} // namespace browser
+} // namespace mozilla
+
+#endif // DirectoryProvider_h__