diff -r 000000000000 -r 6474c204b198 ipc/glue/BackgroundChildImpl.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/BackgroundChildImpl.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,103 @@
+/* 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/. */
+
+#include "BackgroundChildImpl.h"
+
+#include "mozilla/ipc/PBackgroundTestChild.h"
+#include "nsTraceRefcnt.h"
+
+namespace {
+
+class TestChild MOZ_FINAL : public mozilla::ipc::PBackgroundTestChild
+{
+  friend class mozilla::ipc::BackgroundChildImpl;
+
+  nsCString mTestArg;
+
+  TestChild(const nsCString& aTestArg)
+  : mTestArg(aTestArg)
+  {
+    MOZ_COUNT_CTOR(mozilla::ipc::BackgroundTestChild);
+  }
+
+  ~TestChild()
+  {
+    MOZ_COUNT_DTOR(mozilla::ipc::BackgroundTestChild);
+  }
+
+  virtual bool
+  Recv__delete__(const nsCString& aTestArg) MOZ_OVERRIDE;
+};
+
+} // anonymous namespace
+
+namespace mozilla {
+namespace ipc {
+
+// -----------------------------------------------------------------------------
+// BackgroundChildImpl::ThreadLocal
+// -----------------------------------------------------------------------------
+
+BackgroundChildImpl::
+ThreadLocal::ThreadLocal()
+{
+  // May happen on any thread!
+  MOZ_COUNT_CTOR(mozilla::ipc::BackgroundChildImpl::ThreadLocal);
+}
+
+BackgroundChildImpl::
+ThreadLocal::~ThreadLocal()
+{
+  // May happen on any thread!
+  MOZ_COUNT_DTOR(mozilla::ipc::BackgroundChildImpl::ThreadLocal);
+}
+
+// -----------------------------------------------------------------------------
+// BackgroundChildImpl
+// -----------------------------------------------------------------------------
+
+BackgroundChildImpl::BackgroundChildImpl()
+{
+  // May happen on any thread!
+  MOZ_COUNT_CTOR(mozilla::ipc::BackgroundChildImpl);
+}
+
+BackgroundChildImpl::~BackgroundChildImpl()
+{
+  // May happen on any thread!
+  MOZ_COUNT_DTOR(mozilla::ipc::BackgroundChildImpl);
+}
+
+void
+BackgroundChildImpl::ActorDestroy(ActorDestroyReason aWhy)
+{
+  // May happen on any thread!
+}
+
+PBackgroundTestChild*
+BackgroundChildImpl::AllocPBackgroundTestChild(const nsCString& aTestArg)
+{
+  return new TestChild(aTestArg);
+}
+
+bool
+BackgroundChildImpl::DeallocPBackgroundTestChild(PBackgroundTestChild* aActor)
+{
+  MOZ_ASSERT(aActor);
+
+  delete static_cast<TestChild*>(aActor);
+  return true;
+}
+
+} // namespace ipc
+} // namespace mozilla
+
+bool
+TestChild::Recv__delete__(const nsCString& aTestArg)
+{
+  MOZ_RELEASE_ASSERT(aTestArg == mTestArg,
+                     "BackgroundTest message was corrupted!");
+
+  return true;
+}