diff -r 000000000000 -r 6474c204b198 content/base/src/StyleSheetList.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/src/StyleSheetList.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* -*- 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 mozilla_dom_StyleSheetList_h
+#define mozilla_dom_StyleSheetList_h
+
+#include "nsIDOMStyleSheetList.h"
+#include "nsWrapperCache.h"
+
+class nsCSSStyleSheet;
+class nsINode;
+
+namespace mozilla {
+namespace dom {
+
+class StyleSheetList : public nsIDOMStyleSheetList
+                     , public nsWrapperCache
+{
+public:
+  StyleSheetList()
+  {
+    SetIsDOMBinding();
+  }
+  virtual ~StyleSheetList() {}
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(StyleSheetList)
+  NS_DECL_NSIDOMSTYLESHEETLIST
+
+  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE MOZ_FINAL;
+
+  virtual nsINode* GetParentObject() const = 0;
+
+  virtual uint32_t Length() = 0;
+  virtual nsCSSStyleSheet* IndexedGetter(uint32_t aIndex, bool& aFound) = 0;
+  nsCSSStyleSheet* Item(uint32_t aIndex)
+  {
+    bool dummy = false;
+    return IndexedGetter(aIndex, dummy);
+  }
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_StyleSheetList_h