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diff --git a/gfx/layers/d3d11/TextureHostWrapperD3D11.h b/gfx/layers/d3d11/TextureHostWrapperD3D11.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_GFX_TextureHostWrapperD3D11_H
+#define MOZILLA_GFX_TextureHostWrapperD3D11_H
+
+#include <deque>
+#include <unordered_map>
+
+#include "mozilla/layers/LayersTypes.h"
+#include "mozilla/layers/TextureHost.h"
+#include "mozilla/UniquePtr.h"
+
+class nsIThreadPool;
+struct ID3D11Texture2D;
+
+namespace mozilla {
+namespace layers {
+
+class DXGITextureHostD3D11;
+
+/**
+ * A Class that allocates and recycles ID3D11Texture2D in TextureUpdate thread.
+ * And manages in use TextureHostWrapperD3D11s in compositor thread.
+ */
+class TextureWrapperD3D11Allocator {
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TextureWrapperD3D11Allocator)
+
+  TextureWrapperD3D11Allocator();
+
+  RefPtr<ID3D11Texture2D> CreateOrRecycle(gfx::SurfaceFormat aSurfaceFormat,
+                                          gfx::IntSize aSize);
+
+  void EnsureStagingTextureNV12(RefPtr<ID3D11Device> aDevice);
+
+  RefPtr<ID3D11Texture2D> GetStagingTextureNV12();
+
+  RefPtr<ID3D11Device> GetDevice();
+
+  void RecycleTexture(RefPtr<ID3D11Texture2D>& aTexture);
+
+  void RegisterTextureHostWrapper(const wr::ExternalImageId& aExternalImageId,
+                                  RefPtr<TextureHost> aTextureHost);
+  void UnregisterTextureHostWrapper(
+      const wr::ExternalImageId& aExternalImageId);
+
+  RefPtr<TextureHost> GetTextureHostWrapper(
+      const wr::ExternalImageId& aExternalImageId);
+
+  // Holds TextureUpdate thread.
+  // Use the SharedThreadPool to create an nsIThreadPool with a maximum of one
+  // thread, which is equivalent to an nsIThread for our purposes.
+  const nsCOMPtr<nsIThreadPool> mThread;
+
+ protected:
+  ~TextureWrapperD3D11Allocator();
+
+  void ClearAllTextures(const MutexAutoLock& aProofOfLock);
+
+  // Holds TextureHostWrapperD3D11s that are in use. TextureHostWrapperD3D11 is
+  // wrapped by WebRenderTextureHost. Accessed only from compositor thread
+  std::unordered_map<uint64_t, RefPtr<TextureHost>> mTextureHostWrappers;
+
+  // Accessed only from TextureUpdate thread
+  RefPtr<ID3D11Texture2D> mStagingTexture;
+
+  Mutex mMutex;
+
+  // Protected by mMutex
+
+  RefPtr<ID3D11Device> mDevice;
+  gfx::IntSize mSize;
+  std::deque<RefPtr<ID3D11Texture2D>> mRecycledTextures;
+};
+
+/**
+ * A TextureHost that exposes DXGITextureHostD3D11 as wrapping YUV
+ * BufferTextureHost. The DXGITextureHostD3D11 holds GpuProcessTextureId of
+ * ID3D11Texture2D. The ID3D11Texture2D is allocated and data updated in
+ * TextureUpdate thread.
+ */
+class TextureHostWrapperD3D11 : public TextureHost {
+ public:
+  static RefPtr<TextureHost> CreateFromBufferTexture(
+      const RefPtr<TextureWrapperD3D11Allocator>& aAllocator,
+      TextureHost* aTextureHost);
+
+  void DeallocateDeviceData() override {}
+
+  gfx::SurfaceFormat GetFormat() const override;
+
+  already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override {
+    return nullptr;  // XXX - implement this (for MOZ_DUMP_PAINTING)
+  }
+
+  gfx::ColorRange GetColorRange() const override;
+
+  gfx::IntSize GetSize() const override;
+
+  bool IsValid() override;
+
+#ifdef MOZ_LAYERS_HAVE_LOG
+  const char* Name() override { return "TextureHostWrapperD3D11"; }
+#endif
+
+  void CreateRenderTexture(
+      const wr::ExternalImageId& aExternalImageId) override;
+
+  void MaybeDestroyRenderTexture() override;
+
+  uint32_t NumSubTextures() override;
+
+  void PushResourceUpdates(wr::TransactionBuilder& aResources,
+                           ResourceUpdateOp aOp,
+                           const Range<wr::ImageKey>& aImageKeys,
+                           const wr::ExternalImageId& aExtID) override;
+
+  void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
+                        const wr::LayoutRect& aBounds,
+                        const wr::LayoutRect& aClip, wr::ImageRendering aFilter,
+                        const Range<wr::ImageKey>& aImageKeys,
+                        PushDisplayItemFlagSet aFlags) override;
+
+  bool SupportsExternalCompositing(WebRenderBackend aBackend) override;
+
+  void UnbindTextureSource() override;
+
+  void NotifyNotUsed() override;
+
+  BufferTextureHost* AsBufferTextureHost() override;
+
+  bool IsWrappingSurfaceTextureHost() override;
+
+  TextureHostType GetTextureHostType() override;
+
+  bool NeedsDeferredDeletion() const override;
+
+  TextureHostWrapperD3D11* AsTextureHostWrapperD3D11() override { return this; }
+
+  void PostTask();
+
+  bool UpdateTextureData();
+
+ protected:
+  TextureHostWrapperD3D11(
+      TextureFlags aFlags,
+      const RefPtr<TextureWrapperD3D11Allocator>& aAllocator,
+      const GpuProcessTextureId aTextureId,
+      DXGITextureHostD3D11* aTextureHostD3D11, TextureHost* aWrappedTextureHost,
+      const wr::ExternalImageId aWrappedExternalImageId);
+
+  virtual ~TextureHostWrapperD3D11();
+
+  TextureHost* EnsureWrappedTextureHost();
+
+  const RefPtr<TextureWrapperD3D11Allocator> mAllocator;
+  const GpuProcessTextureId mTextureId;
+  // DXGITextureHostD3D11 that replaces the wrapping TextureHost.
+  const RefPtr<DXGITextureHostD3D11> mTextureHostD3D11;
+  // WebRenderTextureHost that wraps BufferTextureHost
+  // BufferTextureHost might be further wrapped by GPUVideoTextureHost.
+  CompositableTextureHostRef mWrappedTextureHost;
+  const wr::ExternalImageId mWrappedExternalImageId;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // MOZILLA_GFX_TextureHostWrapperD3D11_H