Move classses VideoCaptureDeviceClient and VideoCaptureBufferPool to media/capture/video

media/capture/video/video_capture_jpeg_decoder.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.
+
+#include "base/callback.h"
+#include "media/capture/capture_export.h"
+#include "media/capture/video/video_capture_device.h"
+
+namespace media {
+
+class CAPTURE_EXPORT VideoCaptureJpegDecoder {
+ public:
+  // Enumeration of decoder status. The enumeration is published for clients to
+  // decide the behavior according to STATUS.
+  enum STATUS {
+    INIT_PENDING,  // Default value while waiting initialization finished.
+    INIT_PASSED,   // Initialization succeed.
+    FAILED,        // JPEG decode is not supported, initialization failed, or
+                   // decode error.
+  };
+
+  using DecodeDoneCB = base::Callback<void(
+      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer>,
+      const scoped_refptr<media::VideoFrame>&)>;
+
+  virtual ~VideoCaptureJpegDecoder() {}
+
+  // Creates and intializes decoder asynchronously.
+  virtual void Initialize() = 0;
+
+  // Returns initialization status.
+  virtual STATUS GetStatus() const = 0;
+
+  // Decodes a JPEG picture.
+  virtual void DecodeCapturedData(
+      const uint8_t* data,
+      size_t in_buffer_size,
+      const media::VideoCaptureFormat& frame_format,
+      base::TimeTicks reference_time,
+      base::TimeDelta timestamp,
+      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer>
+          out_buffer) = 0;
+};
+
+}  // namespace media