diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/GrSurface.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/GrSurface.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+/*
+ * 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 "GrSurface.h"
+
+#include "SkBitmap.h"
+#include "SkGr.h"
+#include "SkImageEncoder.h"
+#include <stdio.h>
+
+void GrSurface::asImageInfo(SkImageInfo* info) const {
+    if (!GrPixelConfig2ColorType(this->config(), &info->fColorType)) {
+        sk_throw();
+    }
+    info->fWidth = this->width();
+    info->fHeight = this->height();
+    info->fAlphaType = kPremul_SkAlphaType;
+}
+
+bool GrSurface::savePixels(const char* filename) {
+    SkBitmap bm;
+    if (!bm.allocPixels(SkImageInfo::MakeN32Premul(this->width(),
+                                                   this->height()))) {
+        return false;
+    }
+
+    bool result = readPixels(0, 0, this->width(), this->height(), kSkia8888_GrPixelConfig,
+                             bm.getPixels());
+    if (!result) {
+        SkDebugf("------ failed to read pixels for %s\n", filename);
+        return false;
+    }
+
+    // remove any previous version of this file
+    remove(filename);
+
+    if (!SkImageEncoder::EncodeFile(filename, bm, SkImageEncoder::kPNG_Type, 100)) {
+        SkDebugf("------ failed to encode %s\n", filename);
+        remove(filename);   // remove any partial file
+        return false;
+    }
+
+    return true;
+}