diff -r 000000000000 -r 6474c204b198 content/media/webrtc/LoadManagerFactory.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/webrtc/LoadManagerFactory.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "LoadManager.h"
+#include "LoadManagerFactory.h"
+#include "MainThreadUtils.h"
+
+#include "mozilla/Preferences.h"
+
+namespace mozilla {
+
+LoadManager* LoadManagerBuild(void)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+
+#if defined(ANDROID) || defined(LINUX)
+  int loadMeasurementInterval =
+    mozilla::Preferences::GetInt("media.navigator.load_adapt.measure_interval", 1000);
+  int averagingSeconds =
+    mozilla::Preferences::GetInt("media.navigator.load_adapt.avg_seconds", 3);
+  float highLoadThreshold =
+    mozilla::Preferences::GetFloat("media.navigator.load_adapt.high_load", 0.90);
+  float lowLoadThreshold =
+    mozilla::Preferences::GetFloat("media.navigator.load_adapt.low_load", 0.40);
+
+  return new LoadManager(loadMeasurementInterval,
+                         averagingSeconds,
+                         highLoadThreshold,
+                         lowLoadThreshold);
+#else
+  // LoadManager not implemented on this platform.
+  return nullptr;
+#endif
+}
+
+void LoadManagerDestroy(mozilla::LoadManager* aLoadManager)
+{
+  delete aLoadManager;
+}
+
+}; // namespace