Implement SkEncodeImage()

ui/gfx/codec/install_skia_codec.h

Index: ui/gfx/codec/install_skia_codec.h
diff --git a/ui/gfx/codec/install_skia_codec.h b/ui/gfx/codec/install_skia_codec.h
new file mode 100644
index 0000000000000000000000000000000000000000..3be743d95d898c2f956282d939429f640779ce20
--- /dev/null
+++ b/ui/gfx/codec/install_skia_codec.h
@@ -0,0 +1,16 @@
+// 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_INSTALL_SKIA_CODEC_H
+#define UI_GFX_CODEC_INSTALL_SKIA_CODEC_H
+
+#include "ui/gfx/gfx_export.h"
+
+namespace gfx {
+
+GFX_EXPORT void InstallCodecsIntoSkia();
+
+}  // namespace gfx
+
+#endif  // UI_GFX_CODEC_INSTALL_SKIA_CODEC_H