Implement SkEncodeImage()

ui/gfx/codec/skia_image_encoder_adapter.h

Index: ui/gfx/codec/skia_image_encoder_adapter.h
diff --git a/ui/gfx/codec/skia_image_encoder_adapter.h b/ui/gfx/codec/skia_image_encoder_adapter.h
new file mode 100644
index 0000000000000000000000000000000000000000..f8789695ed7ad79261830e12be898ee09e5dfc47
--- /dev/null
+++ b/ui/gfx/codec/skia_image_encoder_adapter.h
@@ -0,0 +1,25 @@
+// Copyright (c) 2016 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.
+
+#ifndef UI_GFX_CODEC_SKIA_IMAGE_ENCODER_ADAPTER_H
+#define UI_GFX_CODEC_SKIA_IMAGE_ENCODER_ADAPTER_H
+
+#include "third_party/skia/include/core/SkEncodedImageFormat.h"
+#include "ui/gfx/gfx_export.h"
+
+class SkWStream;
+class SkPixmap;
+
+namespace gfx {
+
+// Matches signature of Skia's SkEncodeImage, but makes use of Chromium's
+// encoders.
+GFX_EXPORT bool EncodeSkiaImage(SkWStream* dst,
+                                const SkPixmap& pixmap,
+                                SkEncodedImageFormat format,
+                                int quality);
+
+}  // namespace gfx
+
+#endif  // UI_GFX_CODEC_SKIA_IMAGE_ENCODER_ADAPTER_H