diff -r 000000000000 -r 6474c204b198 ipc/glue/BackgroundParentImpl.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/BackgroundParentImpl.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,117 @@
+/* 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 "BackgroundParentImpl.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "mozilla/ipc/PBackgroundTestParent.h"
+#include "nsThreadUtils.h"
+#include "nsTraceRefcnt.h"
+#include "nsXULAppAPI.h"
+
+using mozilla::ipc::AssertIsOnBackgroundThread;
+
+namespace {
+
+void
+AssertIsInMainProcess()
+{
+  MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
+}
+
+void
+AssertIsOnMainThread()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+class TestParent MOZ_FINAL : public mozilla::ipc::PBackgroundTestParent
+{
+  friend class mozilla::ipc::BackgroundParentImpl;
+
+  TestParent()
+  {
+    MOZ_COUNT_CTOR(mozilla::ipc::BackgroundTestParent);
+  }
+
+  ~TestParent()
+  {
+    MOZ_COUNT_DTOR(mozilla::ipc::BackgroundTestParent);
+  }
+
+  virtual void
+  ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE;
+};
+
+} // anonymous namespace
+
+namespace mozilla {
+namespace ipc {
+
+BackgroundParentImpl::BackgroundParentImpl()
+{
+  AssertIsInMainProcess();
+  AssertIsOnMainThread();
+
+  MOZ_COUNT_CTOR(mozilla::ipc::BackgroundParentImpl);
+}
+
+BackgroundParentImpl::~BackgroundParentImpl()
+{
+  AssertIsInMainProcess();
+  AssertIsOnMainThread();
+
+  MOZ_COUNT_DTOR(mozilla::ipc::BackgroundParentImpl);
+}
+
+void
+BackgroundParentImpl::ActorDestroy(ActorDestroyReason aWhy)
+{
+  AssertIsInMainProcess();
+  AssertIsOnBackgroundThread();
+}
+
+PBackgroundTestParent*
+BackgroundParentImpl::AllocPBackgroundTestParent(const nsCString& aTestArg)
+{
+  AssertIsInMainProcess();
+  AssertIsOnBackgroundThread();
+
+  return new TestParent();
+}
+
+bool
+BackgroundParentImpl::RecvPBackgroundTestConstructor(
+                                                  PBackgroundTestParent* aActor,
+                                                  const nsCString& aTestArg)
+{
+  AssertIsInMainProcess();
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(aActor);
+
+  return PBackgroundTestParent::Send__delete__(aActor, aTestArg);
+}
+
+bool
+BackgroundParentImpl::DeallocPBackgroundTestParent(
+                                                  PBackgroundTestParent* aActor)
+{
+  AssertIsInMainProcess();
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(aActor);
+
+  delete static_cast<TestParent*>(aActor);
+  return true;
+}
+
+} // namespace ipc
+} // namespace mozilla
+
+void
+TestParent::ActorDestroy(ActorDestroyReason aWhy)
+{
+  AssertIsInMainProcess();
+  AssertIsOnBackgroundThread();
+}