diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/core/SkTileGridPicture.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/core/SkTileGridPicture.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkTileGridPicture.h"
+
+#include "SkPictureStateTree.h"
+#include "SkTileGrid.h"
+
+SkTileGridPicture::SkTileGridPicture(int width, int height, const TileGridInfo& info) {
+    SkASSERT(info.fMargin.width() >= 0);
+    SkASSERT(info.fMargin.height() >= 0);
+    fInfo = info;
+    // Note: SkIRects are non-inclusive of the right() column and bottom() row.
+    // For example, an SkIRect at 0,0 with a size of (1,1) will only have
+    // content at pixel (0,0) and will report left=0 and right=1, hence the
+    // "-1"s below.
+    fXTileCount = (width + info.fTileInterval.width() - 1) / info.fTileInterval.width();
+    fYTileCount = (height + info.fTileInterval.height() - 1) / info.fTileInterval.height();
+}
+
+SkBBoxHierarchy* SkTileGridPicture::createBBoxHierarchy() const {
+    return SkNEW_ARGS(SkTileGrid, (fXTileCount, fYTileCount, fInfo,
+         SkTileGridNextDatum<SkPictureStateTree::Draw>));
+}