diff -r 000000000000 -r 6474c204b198 dom/base/PerformanceResourceTiming.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/base/PerformanceResourceTiming.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 2; 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 "PerformanceResourceTiming.h"
+#include "mozilla/dom/PerformanceResourceTimingBinding.h"
+
+using namespace mozilla::dom;
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(PerformanceResourceTiming,
+                                   PerformanceEntry,
+                                   mTiming)
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceResourceTiming,
+                                               PerformanceEntry)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(PerformanceResourceTiming)
+NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
+
+NS_IMPL_ADDREF_INHERITED(PerformanceResourceTiming, PerformanceEntry)
+NS_IMPL_RELEASE_INHERITED(PerformanceResourceTiming, PerformanceEntry)
+
+PerformanceResourceTiming::PerformanceResourceTiming(nsPerformanceTiming* aPerformanceTiming,
+                                                     nsPerformance* aPerformance)
+: PerformanceEntry(aPerformance),
+  mTiming(aPerformanceTiming)
+{
+  MOZ_ASSERT(aPerformance, "Parent performance object should be provided");
+}
+
+PerformanceResourceTiming::~PerformanceResourceTiming()
+{
+}
+
+DOMHighResTimeStamp
+PerformanceResourceTiming::StartTime() const
+{
+  DOMHighResTimeStamp startTime = mTiming->RedirectStartHighRes();
+  return startTime ? startTime : mTiming->FetchStartHighRes();
+}
+
+JSObject*
+PerformanceResourceTiming::WrapObject(JSContext* aCx)
+{
+  return PerformanceResourceTimingBinding::Wrap(aCx, this);
+}