diff -r 000000000000 -r 6474c204b198 layout/generic/nsGridContainerFrame.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/generic/nsGridContainerFrame.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+
+/* This Source Code is subject to the terms of the Mozilla Public License
+ * version 2.0 (the "License"). You can obtain a copy of the License at
+ * http://mozilla.org/MPL/2.0/. */
+
+/* rendering object for CSS "display: grid" */
+
+#include "nsGridContainerFrame.h"
+#include "nsPresContext.h"
+#include "nsStyleContext.h"
+
+//----------------------------------------------------------------------
+
+// Frame class boilerplate
+// =======================
+
+NS_QUERYFRAME_HEAD(nsGridContainerFrame)
+  NS_QUERYFRAME_ENTRY(nsGridContainerFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsGridContainerFrameSuper)
+
+NS_IMPL_FRAMEARENA_HELPERS(nsGridContainerFrame)
+
+nsIFrame*
+NS_NewGridContainerFrame(nsIPresShell* aPresShell,
+                         nsStyleContext* aContext)
+{
+  return new (aPresShell) nsGridContainerFrame(aContext);
+}
+
+
+//----------------------------------------------------------------------
+
+// nsGridContainerFrame Method Implementations
+// ===========================================
+
+/* virtual */
+nsGridContainerFrame::~nsGridContainerFrame()
+{
+}
+
+nsIAtom*
+nsGridContainerFrame::GetType() const
+{
+  return nsGkAtoms::gridContainerFrame;
+}
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsGridContainerFrame::GetFrameName(nsAString& aResult) const
+{
+  return MakeFrameName(NS_LITERAL_STRING("GridContainer"), aResult);
+}
+#endif