Introduce the image_decoder service

services/image_decoder/image_decoder_impl.h

+// Copyright 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 CHROME_UTILITY_IMAGE_DECODER_IMPL_H_
+#define CHROME_UTILITY_IMAGE_DECODER_IMPL_H_
+
+#include <stdint.h>
+
+#include "base/macros.h"
+#include "services/image_decoder/public/interfaces/image_decoder.mojom.h"
+#include "services/service_manager/public/cpp/service_context_ref.h"
+
+namespace image_decoder {
+
+class ImageDecoderImpl : public mojom::ImageDecoder {
+ public:
+  explicit ImageDecoderImpl(
+      std::unique_ptr<service_manager::ServiceContextRef> service_ref);
+  ~ImageDecoderImpl() override;
+
+  // Overridden from mojom::ImageDecoder:
+  void DecodeImage(
+      const std::vector<uint8_t>& encoded_data,
+      mojom::ImageCodec codec,
+      bool shrink_to_fit,
+      int64_t max_size_in_bytes,
+      const DecodeImageCallback& callback) override;
+
+ private:
+  const std::unique_ptr<service_manager::ServiceContextRef> service_ref_;
+
+  DISALLOW_COPY_AND_ASSIGN(ImageDecoderImpl);
+};
+
+}  // namespace image_decoder
+
+#endif  // CHROME_UTILITY_IMAGE_DECODER_IMPL_H_