diff --git a/dom/plugins/ipc/PPluginInstance.ipdl b/dom/plugins/ipc/PPluginInstance.ipdl
index 63597538168..95640f1733e 100644
--- a/dom/plugins/ipc/PPluginInstance.ipdl
+++ b/dom/plugins/ipc/PPluginInstance.ipdl
@@ -52,6 +52,7 @@ using NPError;
 using NPRemoteWindow;
 using NPRemoteEvent;
 using NPRect;
+using NPImageFormat;
 using NPNURLVariable;
 using NPCoordinateSpace;
 using mozilla::plugins::NativeWindowHandle;
@@ -59,6 +60,7 @@ using mozilla::gfxSurfaceType;
 using gfxIntSize;
 using mozilla::null_t;
 using mozilla::plugins::WindowsSharedMemoryHandle;
+using mozilla::plugins::DXGISharedSurfaceHandle;
 using SurfaceDescriptorX11;
 using nsIntRect;
 using nsTextEvent;
@@ -84,6 +86,20 @@ union SurfaceDescriptor {
   null_t;
 };
 
+union AsyncSurfaceDescriptor {
+  Shmem;
+  DXGISharedSurfaceHandle;
+};
+
+struct NPRemoteAsyncSurface
+{
+  uint32_t version;
+  gfxIntSize size;
+  NPImageFormat format;
+  uint32_t      stride;
+  AsyncSurfaceDescriptor data;
+};
+
 rpc protocol PPluginInstance
 {
   manager PPluginModule;
diff --git a/dom/plugins/ipc/PluginMessageUtils.h b/dom/plugins/ipc/PluginMessageUtils.h
index b48ffb74e22..ad7527a1f69 100644
--- a/dom/plugins/ipc/PluginMessageUtils.h
+++ b/dom/plugins/ipc/PluginMessageUtils.h
@@ -142,8 +142,10 @@ typedef intptr_t NativeWindowHandle; // never actually used, will always be 0
 
 #ifdef XP_WIN
 typedef base::SharedMemoryHandle WindowsSharedMemoryHandle;
+typedef HANDLE DXGISharedSurfaceHandle;
 #else
 typedef mozilla::null_t WindowsSharedMemoryHandle;
+typedef mozilla::null_t DXGISharedSurfaceHandle;
 #endif
 
 // XXX maybe not the best place for these. better one?
@@ -354,6 +356,32 @@ struct ParamTraits<NPWindowType>
   }
 };
 
+template <>
+struct ParamTraits<NPImageFormat>
+{
+  typedef NPImageFormat paramType;
+
+  static void Write(Message* aMsg, const paramType& aParam)
+  {
+    aMsg->WriteInt16(int16(aParam));
+  }
+
+  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
+  {
+    int16 result;
+    if (aMsg->ReadInt16(aIter, &result)) {
+      *aResult = paramType(result);
+      return true;
+    }
+    return false;
+  }
+
+  static void Log(const paramType& aParam, std::wstring* aLog)
+  {
+    aLog->append(StringPrintf(L"%d", int16(aParam)));
+  }
+};
+
 template <>
 struct ParamTraits<mozilla::plugins::NPRemoteWindow>
 {