diff --git a/gfx/layers/Compositor.h b/gfx/layers/Compositor.h
index c53a663cff85..2de953a0650b 100644
--- a/gfx/layers/Compositor.h
+++ b/gfx/layers/Compositor.h
@@ -39,6 +39,8 @@
  *
  * # Main interfaces and abstractions
  *
+ *  - Layer, ShadowableLayer and LayerComposite
+ *    (see Layers.h and ipc/ShadowLayers.h)
  *  - CompositableClient and CompositableHost
  *    (client/CompositableClient.h composite/CompositableHost.h)
  *  - TextureClient and TextureHost
@@ -69,6 +71,7 @@
  * are also platform-independent. Examples of compositable classes are:
  *  - ImageClient
  *  - CanvasClient
+ *  - ContentHost
  *  - etc.
  * Texture classes (TextureClient and TextureHost) are thin abstractions over
  * platform-dependent texture memory. They are maniplulated by compositables
diff --git a/gfx/layers/client/CompositableClient.h b/gfx/layers/client/CompositableClient.h
index 5ca8ae067d26..90b4235f8e0d 100644
--- a/gfx/layers/client/CompositableClient.h
+++ b/gfx/layers/client/CompositableClient.h
@@ -53,6 +53,11 @@ class ContentClientRemoteBuffer;
  * Connect() creates the underlying IPDL actor (see CompositableChild) and the
  * corresponding CompositableHost on the other side.
  *
+ * To do in-transaction texture transfer (the default), call
+ * ShadowLayerForwarder::Attach(CompositableClient*, ShadowableLayer*). This
+ * will let the LayerComposite on the compositor side know which
+ * CompositableHost to use for compositing.
+ *
  * To do async texture transfer (like async-video), the CompositableClient
  * should be created with a different CompositableForwarder (like
  * ImageBridgeChild) and attachment is done with
diff --git a/gfx/layers/composite/CompositableHost.cpp b/gfx/layers/composite/CompositableHost.cpp
index 5c0d092ae4a0..018b5b349db8 100644
--- a/gfx/layers/composite/CompositableHost.cpp
+++ b/gfx/layers/composite/CompositableHost.cpp
@@ -29,17 +29,41 @@ namespace layers {
 class Compositor;
 
 CompositableHost::CompositableHost(const TextureInfo& aTextureInfo)
-    : mTextureInfo(aTextureInfo), mCompositorBridgeID(0) {
+    : mTextureInfo(aTextureInfo),
+      mCompositorBridgeID(0),
+      mLayer(nullptr),
+      mAttached(false),
+      mKeepAttached(false) {
   MOZ_COUNT_CTOR(CompositableHost);
 }
 
 CompositableHost::~CompositableHost() { MOZ_COUNT_DTOR(CompositableHost); }
 
 void CompositableHost::UseTextureHost(const nsTArray<TimedTexture>& aTextures) {
+  if (mTextureSourceProvider) {
+    for (auto& texture : aTextures) {
+      texture.mTexture->SetTextureSourceProvider(mTextureSourceProvider);
+    }
+  }
+}
+
+void CompositableHost::UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
+                                                 TextureHost* aTextureOnWhite) {
+  MOZ_ASSERT(aTextureOnBlack && aTextureOnWhite);
+  if (mTextureSourceProvider) {
+    aTextureOnBlack->SetTextureSourceProvider(mTextureSourceProvider);
+    aTextureOnWhite->SetTextureSourceProvider(mTextureSourceProvider);
+  }
 }
 
 void CompositableHost::RemoveTextureHost(TextureHost* aTexture) {}
 
+void CompositableHost::SetTextureSourceProvider(
+    TextureSourceProvider* aProvider) {
+  MOZ_ASSERT(aProvider);
+  mTextureSourceProvider = aProvider;
+}
+
 /* static */
 already_AddRefed<CompositableHost> CompositableHost::Create(
     const TextureInfo& aTextureInfo) {
@@ -66,5 +90,9 @@ void CompositableHost::DumpTextureHost(std::stringstream& aStream,
   aStream << gfxUtils::GetAsDataURI(dSurf).get();
 }
 
+TextureSourceProvider* CompositableHost::GetTextureSourceProvider() const {
+  return mTextureSourceProvider;
+}
+
 }  // namespace layers
 }  // namespace mozilla
diff --git a/gfx/layers/composite/CompositableHost.h b/gfx/layers/composite/CompositableHost.h
index e2bcad7df594..e696a2f484fb 100644
--- a/gfx/layers/composite/CompositableHost.h
+++ b/gfx/layers/composite/CompositableHost.h
@@ -7,29 +7,48 @@
 #ifndef MOZILLA_GFX_BUFFERHOST_H
 #define MOZILLA_GFX_BUFFERHOST_H
 
-#include <stdint.h>              // for uint64_t
-#include <stdio.h>               // for FILE
-#include "gfxRect.h"             // for gfxRect
-#include "mozilla/Assertions.h"  // for MOZ_ASSERT, etc
-#include "mozilla/Attributes.h"  // for override
-#include "mozilla/RefPtr.h"      // for RefPtr, RefCounted, etc
-//#include "mozilla/gfx/MatrixFwd.h"  // for Matrix4x4
-#include "mozilla/gfx/Polygon.h"  // for Polygon
-#include "mozilla/gfx/Rect.h"     // for Rect
+#include <stdint.h>                 // for uint64_t
+#include <stdio.h>                  // for FILE
+#include "gfxRect.h"                // for gfxRect
+#include "mozilla/Assertions.h"     // for MOZ_ASSERT, etc
+#include "mozilla/Attributes.h"     // for override
+#include "mozilla/RefPtr.h"         // for RefPtr, RefCounted, etc
+#include "mozilla/gfx/MatrixFwd.h"  // for Matrix4x4
+#include "mozilla/gfx/Point.h"      // for Point
+#include "mozilla/gfx/Polygon.h"    // for Polygon
+#include "mozilla/gfx/Rect.h"       // for Rect
+#include "mozilla/gfx/Types.h"      // for SamplingFilter
 #include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/layers/Compositor.h"       // for Compositor
 #include "mozilla/layers/CompositorTypes.h"  // for TextureInfo, etc
-//#include "mozilla/layers/LayersTypes.h"      // for LayerRenderState, etc
+#include "mozilla/layers/Effects.h"          // for Texture Effect
+#include "mozilla/layers/LayersTypes.h"      // for LayerRenderState, etc
 #include "mozilla/layers/LayersMessages.h"
 #include "mozilla/layers/TextureHost.h"  // for TextureHost
+#include "mozilla/mozalloc.h"            // for operator delete
 #include "nsCOMPtr.h"                    // for already_AddRefed
+#include "nsRegion.h"                    // for nsIntRegion
 #include "nscore.h"                      // for nsACString
 #include "Units.h"                       // for CSSToScreenScale
 
 namespace mozilla {
+namespace gfx {
+class DataSourceSurface;
+}  // namespace gfx
 
 namespace layers {
 
+class Layer;
+class LayerComposite;
+class ImageHost;
+class Compositor;
+class ThebesBufferData;
+class TiledContentHost;
+class CompositableParentManager;
 class WebRenderImageHost;
+class ContentHost;
+class ContentHostTexture;
+struct EffectChain;
 
 struct ImageCompositeNotificationInfo {
   base::ProcessId mImageBridgeProcessId;
@@ -71,13 +90,100 @@ class CompositableHost {
   static already_AddRefed<CompositableHost> Create(
       const TextureInfo& aTextureInfo);
 
+  virtual CompositableType GetType() = 0;
+
+  // If base class overrides, it should still call the parent implementation
+  virtual void SetTextureSourceProvider(TextureSourceProvider* aProvider);
+
+  // composite the contents of this buffer host to the compositor's surface
+  virtual void Composite(Compositor* aCompositor, LayerComposite* aLayer,
+                         EffectChain& aEffectChain, float aOpacity,
+                         const gfx::Matrix4x4& aTransform,
+                         const gfx::SamplingFilter aSamplingFilter,
+                         const gfx::IntRect& aClipRect,
+                         const nsIntRegion* aVisibleRegion = nullptr,
+                         const Maybe<gfx::Polygon>& aGeometry = Nothing()) = 0;
+
+  /**
+   * Update the content host.
+   * aUpdated is the region which should be updated.
+   */
+  virtual bool UpdateThebes(const ThebesBufferData& aData,
+                            const nsIntRegion& aUpdated,
+                            const nsIntRegion& aOldValidRegionBack) {
+    NS_ERROR("should be implemented or not used");
+    return false;
+  }
+
+  /**
+   * Returns the front buffer.
+   * *aPictureRect (if non-null, and the returned TextureHost is non-null)
+   * is set to the picture rect.
+   */
+  virtual TextureHost* GetAsTextureHost(gfx::IntRect* aPictureRect = nullptr) {
+    return nullptr;
+  }
+
+  virtual gfx::IntSize GetImageSize() {
+    MOZ_ASSERT(false, "Should have been overridden");
+    return gfx::IntSize();
+  }
+
+  const TextureInfo& GetTextureInfo() const { return mTextureInfo; }
+
+  TextureSourceProvider* GetTextureSourceProvider() const;
+
+  Layer* GetLayer() const { return mLayer; }
+  void SetLayer(Layer* aLayer) { mLayer = aLayer; }
+
+  virtual ContentHost* AsContentHost() { return nullptr; }
+  virtual ContentHostTexture* AsContentHostTexture() { return nullptr; }
+  virtual ImageHost* AsImageHost() { return nullptr; }
+  virtual TiledContentHost* AsTiledContentHost() { return nullptr; }
   virtual WebRenderImageHost* AsWebRenderImageHost() { return nullptr; }
 
+  typedef uint32_t AttachFlags;
+  static const AttachFlags NO_FLAGS = 0;
+  static const AttachFlags ALLOW_REATTACH = 1;
+  static const AttachFlags KEEP_ATTACHED = 2;
+  static const AttachFlags FORCE_DETACH = 2;
+
+  virtual void Attach(Layer* aLayer, TextureSourceProvider* aProvider,
+                      AttachFlags aFlags = NO_FLAGS) {
+    MOZ_ASSERT(aProvider);
+    NS_ASSERTION(aFlags & ALLOW_REATTACH || !mAttached,
+                 "Re-attaching compositables must be explicitly authorised");
+    SetTextureSourceProvider(aProvider);
+    SetLayer(aLayer);
+    mAttached = true;
+    mKeepAttached = aFlags & KEEP_ATTACHED;
+  }
+  // Detach this compositable host from its layer.
+  // If we are used for async video, then it is not safe to blindly detach since
+  // we might be re-attached to a different layer. aLayer is the layer which the
+  // caller expects us to be attached to, we will only detach if we are in fact
+  // attached to that layer. If we are part of a normal layer, then we will be
+  // detached in any case. if aLayer is null, then we will only detach if we are
+  // not async.
+  // Only force detach if the IPDL tree is being shutdown.
+  virtual void Detach(Layer* aLayer = nullptr, AttachFlags aFlags = NO_FLAGS) {
+    if (!mKeepAttached || aLayer == mLayer || aFlags & FORCE_DETACH) {
+      SetLayer(nullptr);
+      mAttached = false;
+      mKeepAttached = false;
+    }
+  }
+  bool IsAttached() { return mAttached; }
+
   virtual void Dump(std::stringstream& aStream, const char* aPrefix = "",
                     bool aDumpHtml = false) {}
   static void DumpTextureHost(std::stringstream& aStream,
                               TextureHost* aTexture);
 
+  virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() {
+    return nullptr;
+  }
+
   struct TimedTexture {
     CompositableTextureHostRef mTexture;
     TimeStamp mTimeStamp;
@@ -86,6 +192,8 @@ class CompositableHost {
     int32_t mProducerID;
   };
   virtual void UseTextureHost(const nsTArray<TimedTexture>& aTextures);
+  virtual void UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
+                                         TextureHost* aTextureOnWhite);
   virtual void RemoveTextureHost(TextureHost* aTexture);
 
   uint64_t GetCompositorBridgeID() const { return mCompositorBridgeID; }
@@ -95,11 +203,22 @@ class CompositableHost {
 
   void SetCompositorBridgeID(uint64_t aID) { mCompositorBridgeID = aID; }
 
+  virtual bool Lock() { return false; }
+
+  virtual void Unlock() {}
+
+  virtual already_AddRefed<TexturedEffect> GenEffect(
+      const gfx::SamplingFilter aSamplingFilter) {
+    return nullptr;
+  }
+
   /// Called when shutting down the layer tree.
   /// This is a good place to clear all potential gpu resources before the
   /// widget is is destroyed.
   virtual void CleanupResources() {}
 
+  virtual void BindTextureSource() {}
+
   virtual uint32_t GetDroppedFrames() { return 0; }
 
  protected:
@@ -107,6 +226,29 @@ class CompositableHost {
   TextureInfo mTextureInfo;
   AsyncCompositableRef mAsyncRef;
   uint64_t mCompositorBridgeID;
+  RefPtr<TextureSourceProvider> mTextureSourceProvider;
+  Layer* mLayer;
+  bool mAttached;
+  bool mKeepAttached;
+};
+
+class AutoLockCompositableHost final {
+ public:
+  explicit AutoLockCompositableHost(CompositableHost* aHost) : mHost(aHost) {
+    mSucceeded = (mHost && mHost->Lock());
+  }
+
+  ~AutoLockCompositableHost() {
+    if (mSucceeded && mHost) {
+      mHost->Unlock();
+    }
+  }
+
+  bool Failed() const { return !mSucceeded; }
+
+ private:
+  RefPtr<CompositableHost> mHost;
+  bool mSucceeded;
 };
 
 }  // namespace layers
diff --git a/gfx/layers/composite/TextureHost.h b/gfx/layers/composite/TextureHost.h
index 5999a6598b5a..0299f8e7e1bb 100644
--- a/gfx/layers/composite/TextureHost.h
+++ b/gfx/layers/composite/TextureHost.h
@@ -21,7 +21,6 @@
 #include "mozilla/layers/CompositorTypes.h"  // for TextureFlags, etc
 #include "mozilla/layers/LayersTypes.h"      // for LayerRenderState, etc
 #include "mozilla/layers/LayersSurfaces.h"
-#include "mozilla/layers/TextureSourceProvider.h"
 #include "mozilla/mozalloc.h"  // for operator delete
 #include "mozilla/Range.h"
 #include "mozilla/UniquePtr.h"  // for UniquePtr
@@ -70,6 +69,7 @@ class TextureReadLock;
 class TextureSourceOGL;
 class TextureSourceD3D11;
 class TextureSourceBasic;
+class TextureSourceProvider;
 class DataTextureSource;
 class PTextureParent;
 class TextureParent;
diff --git a/gfx/layers/ipc/CompositableTransactionParent.cpp b/gfx/layers/ipc/CompositableTransactionParent.cpp
index e723161cf5d1..c16e11281171 100644
--- a/gfx/layers/ipc/CompositableTransactionParent.cpp
+++ b/gfx/layers/ipc/CompositableTransactionParent.cpp
@@ -7,6 +7,8 @@
 #include "CompositableTransactionParent.h"
 #include "CompositableHost.h"        // for CompositableParent, etc
 #include "CompositorBridgeParent.h"  // for CompositorBridgeParent
+#include "GLContext.h"               // for GLContext
+#include "Layers.h"                  // for Layer
 #include "mozilla/Assertions.h"      // for MOZ_ASSERT, etc
 #include "mozilla/RefPtr.h"          // for RefPtr
 #include "mozilla/layers/CompositorTypes.h"
@@ -14,6 +16,7 @@
 #include "mozilla/layers/LayersSurfaces.h"     // for SurfaceDescriptor
 #include "mozilla/layers/LayersTypes.h"        // for MOZ_LAYERS_LOG
 #include "mozilla/layers/TextureHost.h"        // for TextureHost
+#include "mozilla/layers/TextureHostOGL.h"     // for TextureHostOGL
 #include "mozilla/mozalloc.h"                  // for operator delete
 #include "mozilla/Unused.h"
 #include "nsDebug.h"   // for NS_WARNING, NS_ASSERTION
@@ -26,6 +29,33 @@
 namespace mozilla {
 namespace layers {
 
+class Compositor;
+
+// This function can in some cases fail and return false without it being a bug.
+// This can theoretically happen if the ImageBridge sends frames before
+// we created the layer tree. Since we can't enforce that the layer
+// tree is already created before ImageBridge operates, there isn't much
+// we can do about it, but in practice it is very rare.
+// Typically when a tab with a video is dragged from a window to another,
+// there can be a short time when the video is still sending frames
+// asynchonously while the layer tree is not reconstructed. It's not a
+// big deal.
+// Note that Layers transactions do not need to call this because they always
+// schedule the composition, in LayerManagerComposite::EndTransaction.
+static bool ScheduleComposition(CompositableHost* aCompositable) {
+  uint64_t id = aCompositable->GetCompositorBridgeID();
+  if (!id) {
+    return false;
+  }
+  CompositorBridgeParent* cp =
+      CompositorBridgeParent::GetCompositorBridgeParent(id);
+  if (!cp) {
+    return false;
+  }
+  cp->ScheduleComposition(wr::RenderReasons::ASYNC_IMAGE);
+  return true;
+}
+
 bool CompositableParentManager::ReceiveCompositableUpdate(
     const CompositableOperation& aEdit) {
   // Ignore all operations on compositables created on stale compositors. We
@@ -41,6 +71,13 @@ bool CompositableParentManager::ReceiveCompositableUpdate(
 bool CompositableParentManager::ReceiveCompositableUpdate(
     const CompositableOperationDetail& aDetail,
     NotNull<CompositableHost*> aCompositable) {
+  if (TextureSourceProvider* provider =
+          aCompositable->GetTextureSourceProvider()) {
+    if (!provider->IsValid()) {
+      return false;
+    }
+  }
+
   switch (aDetail.type()) {
     case CompositableOperationDetail::TOpRemoveTexture: {
       const OpRemoveTexture& op = aDetail.get_OpRemoveTexture();
@@ -81,6 +118,10 @@ bool CompositableParentManager::ReceiveCompositableUpdate(
           }
         }
       }
+
+      if (UsesImageBridge() && aCompositable->GetLayer()) {
+        ScheduleComposition(aCompositable);
+      }
       break;
     }
     case CompositableOperationDetail::TOpDeliverAcquireFence: {
@@ -155,7 +196,10 @@ void CompositableParentManager::ReleaseCompositable(
     return;
   }
 
+  RefPtr<CompositableHost> host = iter->second;
   mCompositables.erase(iter);
+
+  host->Detach(nullptr, CompositableHost::FORCE_DETACH);
 }
 
 }  // namespace layers
diff --git a/gfx/layers/wr/WebRenderImageHost.cpp b/gfx/layers/wr/WebRenderImageHost.cpp
index 11774f843a3a..e531a9a8c29f 100644
--- a/gfx/layers/wr/WebRenderImageHost.cpp
+++ b/gfx/layers/wr/WebRenderImageHost.cpp
@@ -10,7 +10,9 @@
 
 #include "mozilla/ScopeExit.h"
 #include "mozilla/layers/AsyncImagePipelineManager.h"
+#include "mozilla/layers/Compositor.h"                // for Compositor
 #include "mozilla/layers/CompositorVsyncScheduler.h"  // for CompositorVsyncScheduler
+#include "mozilla/layers/Effects.h"  // for TexturedEffect, Effect, etc
 #include "mozilla/layers/WebRenderBridgeParent.h"
 #include "mozilla/layers/WebRenderTextureHost.h"
 #include "nsAString.h"
@@ -96,6 +98,11 @@ void WebRenderImageHost::UseTextureHost(
   }
 }
 
+void WebRenderImageHost::UseComponentAlphaTextures(
+    TextureHost* aTextureOnBlack, TextureHost* aTextureOnWhite) {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+}
+
 void WebRenderImageHost::CleanupResources() {
   ClearImages();
   SetCurrentTextureHost(nullptr);
@@ -134,6 +141,11 @@ void WebRenderImageHost::AppendImageCompositeNotification(
   }
 }
 
+TextureHost* WebRenderImageHost::GetAsTextureHost(IntRect* aPictureRect) {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+  return nullptr;
+}
+
 TextureHost* WebRenderImageHost::GetAsTextureHostForComposite(
     AsyncImagePipelineManager* aAsyncImageManager) {
   mCurrentAsyncImageManager = aAsyncImageManager;
@@ -170,6 +182,27 @@ void WebRenderImageHost::SetCurrentTextureHost(TextureHost* aTexture) {
   mCurrentTextureHost = aTexture;
 }
 
+void WebRenderImageHost::Attach(Layer* aLayer, TextureSourceProvider* aProvider,
+                                AttachFlags aFlags) {}
+
+void WebRenderImageHost::Composite(
+    Compositor* aCompositor, LayerComposite* aLayer, EffectChain& aEffectChain,
+    float aOpacity, const gfx::Matrix4x4& aTransform,
+    const gfx::SamplingFilter aSamplingFilter, const gfx::IntRect& aClipRect,
+    const nsIntRegion* aVisibleRegion, const Maybe<gfx::Polygon>& aGeometry) {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+}
+
+void WebRenderImageHost::SetTextureSourceProvider(
+    TextureSourceProvider* aProvider) {
+  if (mTextureSourceProvider != aProvider) {
+    for (const auto& img : Images()) {
+      img.mTextureHost->SetTextureSourceProvider(aProvider);
+    }
+  }
+  CompositableHost::SetTextureSourceProvider(aProvider);
+}
+
 void WebRenderImageHost::Dump(std::stringstream& aStream, const char* aPrefix,
                               bool aDumpHtml) {
   for (const auto& img : Images()) {
@@ -180,6 +213,28 @@ void WebRenderImageHost::Dump(std::stringstream& aStream, const char* aPrefix,
   }
 }
 
+already_AddRefed<gfx::DataSourceSurface> WebRenderImageHost::GetAsSurface() {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+  return nullptr;
+}
+
+bool WebRenderImageHost::Lock() {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+  return false;
+}
+
+void WebRenderImageHost::Unlock() {
+  MOZ_ASSERT_UNREACHABLE("unexpected to be called");
+}
+
+IntSize WebRenderImageHost::GetImageSize() {
+  const TimedImage* img = ChooseImage();
+  if (img) {
+    return IntSize(img->mPictureRect.Width(), img->mPictureRect.Height());
+  }
+  return IntSize();
+}
+
 void WebRenderImageHost::SetWrBridge(const wr::PipelineId& aPipelineId,
                                      WebRenderBridgeParent* aWrBridge) {
   MOZ_ASSERT(aWrBridge);
diff --git a/gfx/layers/wr/WebRenderImageHost.h b/gfx/layers/wr/WebRenderImageHost.h
index 6c42ccc563e7..1b663308b77f 100644
--- a/gfx/layers/wr/WebRenderImageHost.h
+++ b/gfx/layers/wr/WebRenderImageHost.h
@@ -28,12 +28,39 @@ class WebRenderImageHost : public CompositableHost, public ImageComposite {
   explicit WebRenderImageHost(const TextureInfo& aTextureInfo);
   virtual ~WebRenderImageHost();
 
+  CompositableType GetType() override { return mTextureInfo.mCompositableType; }
+
+  void Composite(Compositor* aCompositor, LayerComposite* aLayer,
+                 EffectChain& aEffectChain, float aOpacity,
+                 const gfx::Matrix4x4& aTransform,
+                 const gfx::SamplingFilter aSamplingFilter,
+                 const gfx::IntRect& aClipRect,
+                 const nsIntRegion* aVisibleRegion = nullptr,
+                 const Maybe<gfx::Polygon>& aGeometry = Nothing()) override;
+
   void UseTextureHost(const nsTArray<TimedTexture>& aTextures) override;
+  void UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
+                                 TextureHost* aTextureOnWhite) override;
   void RemoveTextureHost(TextureHost* aTexture) override;
 
+  TextureHost* GetAsTextureHost(gfx::IntRect* aPictureRect = nullptr) override;
+
+  void Attach(Layer* aLayer, TextureSourceProvider* aProvider,
+              AttachFlags aFlags = NO_FLAGS) override;
+
+  void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
+
+  gfx::IntSize GetImageSize() override;
+
   void Dump(std::stringstream& aStream, const char* aPrefix = "",
             bool aDumpHtml = false) override;
 
+  already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
+
+  bool Lock() override;
+
+  void Unlock() override;
+
   void CleanupResources() override;
 
   uint32_t GetDroppedFrames() override { return GetDroppedFramesAndReset(); }
diff --git a/gfx/webrender_bindings/RenderThread.cpp b/gfx/webrender_bindings/RenderThread.cpp
index 29dec5e7c97f..03f665525c30 100644
--- a/gfx/webrender_bindings/RenderThread.cpp
+++ b/gfx/webrender_bindings/RenderThread.cpp
@@ -22,7 +22,6 @@
 #include "mozilla/layers/CompositorManagerParent.h"
 #include "mozilla/layers/WebRenderBridgeParent.h"
 #include "mozilla/layers/SharedSurfacesParent.h"
-#include "mozilla/layers/SurfacePool.h"
 #include "mozilla/StaticPtr.h"
 #include "mozilla/Telemetry.h"
 #include "mozilla/webrender/RendererOGL.h"