diff -r 000000000000 -r 6474c204b198 layout/xul/grid/nsGridRowLeafFrame.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/xul/grid/nsGridRowLeafFrame.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,97 @@
+/* -*- 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/. */
+
+//
+// Eric Vaughan
+// Netscape Communications
+//
+// See documentation in associated header file
+//
+
+#include "nsGridRowLeafFrame.h"
+#include "nsGridRowLeafLayout.h"
+#include "nsGridRow.h"
+#include "nsBoxLayoutState.h"
+#include "nsGridLayout2.h"
+
+already_AddRefed<nsBoxLayout> NS_NewGridRowLeafLayout();
+
+nsIFrame*
+NS_NewGridRowLeafFrame(nsIPresShell* aPresShell,
+                       nsStyleContext* aContext)
+{
+  nsCOMPtr<nsBoxLayout> layout = NS_NewGridRowLeafLayout();
+  return new (aPresShell) nsGridRowLeafFrame(aPresShell, aContext, false,
+                                             layout);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsGridRowLeafFrame)
+
+/*
+ * Our border and padding could be affected by our columns or rows.
+ * Let's go check it out.
+ */
+nsresult
+nsGridRowLeafFrame::GetBorderAndPadding(nsMargin& aBorderAndPadding)
+{
+  // if our columns have made our padding larger add it in.
+  nsresult rv = nsBoxFrame::GetBorderAndPadding(aBorderAndPadding);
+
+  nsIGridPart* part = nsGrid::GetPartFromBox(this);
+  if (!part)
+    return rv;
+    
+  int32_t index = 0;
+  nsGrid* grid = part->GetGrid(this, &index);
+
+  if (!grid) 
+    return rv;
+
+  bool isHorizontal = IsHorizontal();
+
+  nsBoxLayoutState state(PresContext());
+
+  int32_t firstIndex = 0;
+  int32_t lastIndex = 0;
+  nsGridRow* firstRow = nullptr;
+  nsGridRow* lastRow = nullptr;
+  grid->GetFirstAndLastRow(state, firstIndex, lastIndex, firstRow, lastRow, isHorizontal);
+
+  // only the first and last rows can be affected.
+  if (firstRow && firstRow->GetBox() == this) {
+    
+    nscoord top = 0;
+    nscoord bottom = 0;
+    grid->GetRowOffsets(state, firstIndex, top, bottom, isHorizontal);
+
+    if (isHorizontal) {
+      if (top > aBorderAndPadding.top)
+        aBorderAndPadding.top = top;
+    } else {
+      if (top > aBorderAndPadding.left)
+        aBorderAndPadding.left = top;
+    } 
+  }
+
+  if (lastRow && lastRow->GetBox() == this) {
+    
+    nscoord top = 0;
+    nscoord bottom = 0;
+    grid->GetRowOffsets(state, lastIndex, top, bottom, isHorizontal);
+
+    if (isHorizontal) {
+      if (bottom > aBorderAndPadding.bottom)
+        aBorderAndPadding.bottom = bottom;
+    } else {
+      if (bottom > aBorderAndPadding.right)
+        aBorderAndPadding.right = bottom;
+    }
+    
+  }  
+  
+  return rv;
+}
+
+