diff -r 000000000000 -r 6474c204b198 xpcom/base/SystemMemoryReporter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/base/SystemMemoryReporter.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 50; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 ci et: */
+/* 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/. */
+
+#ifndef mozilla_SystemMemoryReporter_h_
+#define mozilla_SystemMemoryReporter_h_
+
+namespace mozilla {
+namespace SystemMemoryReporter {
+
+// This only works on Linux, but to make callers' lives easier, we stub out
+// empty functions on other platforms.
+
+#if defined(XP_LINUX)
+  void Init();
+#else
+  void Init() {}
+#endif
+
+} // namespace SystemMemoryReporter
+} // namespace mozilla
+
+#endif