diff -r 000000000000 -r 6474c204b198 image/src/ImageMetadata.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/image/src/ImageMetadata.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- 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/. */
+
+#include "ImageMetadata.h"
+
+#include "RasterImage.h"
+#include "nsComponentManagerUtils.h"
+#include "nsISupportsPrimitives.h"
+#include "nsXPCOMCID.h"
+
+using namespace mozilla::image;
+
+void
+ImageMetadata::SetOnImage(RasterImage* image)
+{
+  if (mHotspotX != -1 && mHotspotY != -1) {
+    nsCOMPtr<nsISupportsPRUint32> intwrapx = do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID);
+    nsCOMPtr<nsISupportsPRUint32> intwrapy = do_CreateInstance(NS_SUPPORTS_PRUINT32_CONTRACTID);
+    intwrapx->SetData(mHotspotX);
+    intwrapy->SetData(mHotspotY);
+    image->Set("hotspotX", intwrapx);
+    image->Set("hotspotY", intwrapy);
+  }
+
+  image->SetLoopCount(mLoopCount);
+
+  for (uint32_t i = 0; i < image->GetNumFrames(); i++) {
+    image->SetFrameAsNonPremult(i, mIsNonPremultiplied);
+  }
+}