diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/GrClipData.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/GrClipData.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrClipData.h"
+
+#include "GrSurface.h"
+#include "SkRect.h"
+
+///////////////////////////////////////////////////////////////////////////////
+
+/**
+ * getConservativeBounds returns the conservative bounding box of the clip
+ * in device (as opposed to canvas) coordinates. If the bounding box is
+ * the result of purely intersections of rects (with an initial replace)
+ * isIntersectionOfRects will be set to true.
+ */
+void GrClipData::getConservativeBounds(const GrSurface* surface,
+                                       SkIRect* devResult,
+                                       bool* isIntersectionOfRects) const {
+    SkRect devBounds;
+
+    fClipStack->getConservativeBounds(-fOrigin.fX,
+                                      -fOrigin.fY,
+                                      surface->width(),
+                                      surface->height(),
+                                      &devBounds,
+                                      isIntersectionOfRects);
+
+    devBounds.roundOut(devResult);
+}