Implement SkEncodeImage()

skia/ext/skia_encode_image.h

Index: skia/ext/skia_encode_image.h
diff --git a/skia/ext/skia_encode_image.h b/skia/ext/skia_encode_image.h
new file mode 100644
index 0000000000000000000000000000000000000000..30e209fafcb2a07acd63c54ae20f879b35c0b5a3
--- /dev/null
+++ b/skia/ext/skia_encode_image.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 SKIA_EXT_SKIA_ENCODE_IMAGE_H
+#define SKIA_EXT_SKIA_ENCODE_IMAGE_H
+
+#include "third_party/skia/include/core/SkEncodedImageFormat.h"
+#include "third_party/skia/include/core/SkTypes.h"
+
+class SkPixmap;
+class SkWStream;
+
+namespace skia {
+
+using ImageEncoderFunction = bool (*)(SkWStream*,
+                                      const SkPixmap&,
+                                      SkEncodedImageFormat,
+                                      int quality);
+
+SK_API void SetImageEncoder(ImageEncoderFunction);
+
+}  // namespace skia
+
+#endif  // SKIA_EXT_SKIA_ENCODE_IMAGE_H