diff -r 000000000000 -r 6474c204b198 xpcom/reflect/xptcall/src/xptcall.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/reflect/xptcall/src/xptcall.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: 4 -*- */
+/* 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/. */
+
+/* entry point wrappers. */
+
+#include "xptcprivate.h"
+#include "xptiprivate.h"
+#include "mozilla/XPTInterfaceInfoManager.h"
+
+using namespace mozilla;
+
+NS_IMETHODIMP
+nsXPTCStubBase::QueryInterface(REFNSIID aIID,
+                               void **aInstancePtr)
+{
+    if (aIID.Equals(mEntry->IID())) {
+        NS_ADDREF_THIS();
+        *aInstancePtr = static_cast<nsISupports*>(this);
+        return NS_OK;
+    }
+
+    return mOuter->QueryInterface(aIID, aInstancePtr);
+}
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsXPTCStubBase::AddRef()
+{
+    return mOuter->AddRef();
+}
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsXPTCStubBase::Release()
+{
+    return mOuter->Release();
+}
+
+EXPORT_XPCOM_API(nsresult)
+NS_GetXPTCallStub(REFNSIID aIID, nsIXPTCProxy* aOuter,
+                  nsISomeInterface* *aResult)
+{
+    if (NS_WARN_IF(!aOuter) || NS_WARN_IF(!aResult))
+        return NS_ERROR_INVALID_ARG;
+
+    XPTInterfaceInfoManager *iim =
+        XPTInterfaceInfoManager::GetSingleton();
+    if (NS_WARN_IF(!iim))
+        return NS_ERROR_NOT_INITIALIZED;
+
+    xptiInterfaceEntry *iie = iim->GetInterfaceEntryForIID(&aIID);
+    if (!iie || !iie->EnsureResolved() || iie->GetBuiltinClassFlag())
+        return NS_ERROR_FAILURE;
+
+    nsXPTCStubBase* newbase = new nsXPTCStubBase(aOuter, iie);
+    if (!newbase)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    *aResult = newbase;
+    return NS_OK;
+}
+
+EXPORT_XPCOM_API(void)
+NS_DestroyXPTCallStub(nsISomeInterface* aStub)
+{
+    nsXPTCStubBase* stub = static_cast<nsXPTCStubBase*>(aStub);
+    delete(stub);
+}