diff -r 000000000000 -r 6474c204b198 gfx/layers/ipc/ShadowLayerUtilsD3D10.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/ipc/ShadowLayerUtilsD3D10.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* 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 <d3d10_1.h>
+#include <dxgi.h>
+
+#include "mozilla/gfx/Point.h"
+#include "mozilla/layers/LayerManagerComposite.h"
+#include "mozilla/layers/PLayerTransaction.h"
+#include "ShadowLayers.h"
+
+using namespace mozilla::gl;
+
+namespace mozilla {
+namespace layers {
+
+
+/*static*/ void
+ShadowLayerForwarder::PlatformSyncBeforeUpdate()
+{
+}
+
+/*static*/ bool
+LayerManagerComposite::SupportsDirectTexturing()
+{
+  return true;
+}
+
+/*static*/ void
+LayerManagerComposite::PlatformSyncBeforeReplyUpdate()
+{
+}
+
+bool
+GetDescriptor(ID3D10Texture2D* aTexture, SurfaceDescriptorD3D10* aDescr)
+{
+  NS_ABORT_IF_FALSE(aTexture && aDescr, "Params must be nonnull");
+
+  HRESULT hr;
+  IDXGIResource* dr = nullptr;
+  hr = aTexture->QueryInterface(__uuidof(IDXGIResource), (void**)&dr);
+  if (!SUCCEEDED(hr) || !dr)
+    return false;
+
+  hr = dr->GetSharedHandle(reinterpret_cast<HANDLE*>(&aDescr->handle()));
+  return !!SUCCEEDED(hr);
+}
+
+already_AddRefed<ID3D10Texture2D>
+OpenForeign(ID3D10Device* aDevice, const SurfaceDescriptorD3D10& aDescr)
+{
+  HRESULT hr;
+  ID3D10Texture2D* tex = nullptr;
+  hr = aDevice->OpenSharedResource(reinterpret_cast<HANDLE>(aDescr.handle()),
+                                   __uuidof(ID3D10Texture2D),
+                                   (void**)&tex);
+  if (!SUCCEEDED(hr) || !tex)
+    return nullptr;
+
+  return nsRefPtr<ID3D10Texture2D>(tex).forget();
+}
+
+} // namespace layers
+} // namespace mozilla