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diff --git a/chromium/ui/gfx/image/image_unittest_util.h b/chromium/ui/gfx/image/image_unittest_util.h
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+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Because the unit tests for gfx::Image are spread across multiple
+// implementation files, this header contains the reusable components.
+
+#ifndef UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
+#define UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
+
+#include "ui/base/layout.h"
+#include "ui/gfx/image/image.h"
+#include "third_party/skia/include/core/SkColor.h"
+
+namespace gfx {
+namespace test {
+
+#if defined(OS_IOS)
+typedef UIImage* PlatformImage;
+#elif defined(OS_MACOSX)
+typedef NSImage* PlatformImage;
+#elif defined(TOOLKIT_GTK)
+typedef GdkPixbuf* PlatformImage;
+#else
+typedef gfx::ImageSkia PlatformImage;
+#endif
+
+std::vector<ui::ScaleFactor> Get1xAnd2xScaleFactors();
+
+// Create a bitmap of |width|x|height|.
+const SkBitmap CreateBitmap(int width, int height);
+
+// Creates an ImageSkia of |width|x|height| DIP with bitmap data for an
+// arbitrary scale factor.
+gfx::ImageSkia CreateImageSkia(int width, int height);
+
+// Returns PNG encoded bytes for a bitmap of |edge_size|x|edge_size|.
+scoped_refptr<base::RefCountedMemory> CreatePNGBytes(int edge_size);
+
+// TODO(rohitrao): Remove the no-argument version of CreateImage().
+gfx::Image CreateImage();
+gfx::Image CreateImage(int width, int height);
+
+// Returns true if the images are equal. Converts the images to ImageSkia to
+// compare them.
+bool IsEqual(const gfx::Image& image1, const gfx::Image& image2);
+
+bool IsEqual(const SkBitmap& bitmap1, const SkBitmap& bitmap2);
+
+bool IsEqual(const scoped_refptr<base::RefCountedMemory>& bytes,
+             const SkBitmap& bitmap);
+
+// An image which was not successfully decoded to PNG should be a red bitmap.
+// Fails if the bitmap is not red.
+void CheckImageIndicatesPNGDecodeFailure(const gfx::Image& image);
+
+// Returns true if the structure of |image_skia| matches the structure
+// described by |width|, |height|, and |scale_factors|.
+// The structure matches if:
+// - |image_skia| is non null.
+// - |image_skia| has ImageSkiaReps of |scale_factors|.
+// - Each of the ImageSkiaReps has a pixel size of |image_skia|.size() *
+//   scale_factor.
+bool ImageSkiaStructureMatches(
+    const gfx::ImageSkia& image_skia,
+    int width,
+    int height,
+    const std::vector<ui::ScaleFactor>& scale_factors);
+
+bool IsEmpty(const gfx::Image& image);
+
+PlatformImage CreatePlatformImage();
+
+gfx::Image::RepresentationType GetPlatformRepresentationType();
+
+PlatformImage ToPlatformType(const gfx::Image& image);
+PlatformImage CopyPlatformType(const gfx::Image& image);
+
+SkColor GetPlatformImageColor(PlatformImage image, int x, int y);
+void CheckColors(SkColor color1, SkColor color2);
+void CheckIsTransparent(SkColor color);
+
+bool IsPlatformImageValid(PlatformImage image);
+
+bool PlatformImagesEqual(PlatformImage image1, PlatformImage image2);
+
+}  // namespace test
+}  // namespace gfx
+
+#endif  // UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_