diff -r 000000000000 -r 6474c204b198 layout/inspector/nsFontFaceList.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/inspector/nsFontFaceList.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* 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 __nsFontFaceList_h__
+#define __nsFontFaceList_h__
+
+#include "nsIDOMFontFaceList.h"
+#include "nsIDOMFontFace.h"
+#include "nsCOMPtr.h"
+#include "nsInterfaceHashtable.h"
+#include "nsHashKeys.h"
+
+class gfxFontEntry;
+class gfxTextRun;
+
+class nsFontFaceList : public nsIDOMFontFaceList
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMFONTFACELIST
+
+  nsFontFaceList();
+  virtual ~nsFontFaceList();
+
+  nsresult AddFontsFromTextRun(gfxTextRun* aTextRun,
+                               uint32_t aOffset, uint32_t aLength);
+
+protected:
+  nsInterfaceHashtable<nsPtrHashKey<gfxFontEntry>,nsIDOMFontFace> mFontFaces;
+};
+
+#endif // __nsFontFaceList_h__