--- a/gfx/layers/ipc/LayerTransactionParent.cpp
+++ b/gfx/layers/ipc/LayerTransactionParent.cpp
@@ -1005,18 +1005,26 @@ bool
 LayerTransactionParent::RecvChildAsyncMessages(InfallibleTArray<AsyncChildMessageData>&& aMessages)
 {
   AutoLayerTransactionParentAsyncMessageSender autoAsyncMessageSender(this);
 
   for (AsyncChildMessageArray::index_type i = 0; i < aMessages.Length(); ++i) {
     const AsyncChildMessageData& message = aMessages[i];
 
     switch (message.type()) {
-      case AsyncChildMessageData::TOpRemoveTextureAsync: {
-        const OpRemoveTextureAsync& op = message.get_OpRemoveTextureAsync();
+      case AsyncChildMessageData::TCompositableOperation: {
+
+        const CompositableOperation& compositable_op =
+          message.get_CompositableOperation();
+        MOZ_ASSERT(compositable_op.detail().type() ==
+          CompositableOperationDetail::TOpRemoveTextureAsync);
+
+        const OpRemoveTextureAsync& op =
+          compositable_op.detail().get_OpRemoveTextureAsync();
+
         CompositableHost* compositable = CompositableHost::FromIPDLActor(op.compositableParent());
         RefPtr<TextureHost> tex = TextureHost::AsTextureHost(op.textureParent());
 
         MOZ_ASSERT(tex.get());
         compositable->RemoveTextureHost(tex);
 
         MOZ_ASSERT(ImageBridgeParent::GetInstance(GetChildProcessId()));
         if (ImageBridgeParent::GetInstance(GetChildProcessId())) {

--- a/gfx/layers/ipc/LayersMessages.ipdlh
+++ b/gfx/layers/ipc/LayersMessages.ipdlh
@@ -510,13 +510,13 @@ union EditReply {
 
 union AsyncParentMessageData {
   OpDeliverFence;
   OpDeliverFenceToTracker;
   OpReplyRemoveTexture;
 };
 
 union AsyncChildMessageData {
-  OpRemoveTextureAsync;
+  CompositableOperation;
 };
 
 } // namespace
 } // namespace

--- a/gfx/layers/ipc/ShadowLayers.h
+++ b/gfx/layers/ipc/ShadowLayers.h
@@ -392,17 +392,17 @@ protected:
   bool InWorkerThread();
 
   RefPtr<LayerTransactionChild> mShadowManager;
 
 private:
 
   Transaction* mTxn;
   MessageLoop* mMessageLoop;
-  std::vector<AsyncChildMessageData> mPendingAsyncMessages;
+  std::vector<CompositableOperation> mPendingAsyncMessages;
   DiagnosticTypes mDiagnosticTypes;
   bool mIsFirstPaint;
   bool mWindowOverlayChanged;
   int32_t mPaintSyncId;
   InfallibleTArray<PluginWindowData> mPluginWindowData;
   FixedSizeSmallShmemSectionAllocator* mSectionAllocator;
 };