Change VideoFrameReceiverOnIOThread to VideoFrameReceiverOnTaskRunner

media/capture/video/video_frame_receiver_on_task_runner.h

+// Copyright 2017 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 MEDIA_CAPTURE_VIDEO_VIDEO_FRAME_RECEIVER_ON_TASK_RUNNER_H_
+#define MEDIA_CAPTURE_VIDEO_VIDEO_FRAME_RECEIVER_ON_TASK_RUNNER_H_
+
+#include "media/capture/video/video_frame_receiver.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace media {
+
+// Decorator for VideoFrameReceiver that forwards all incoming calls to the
+// given |task_runner|.
+class CAPTURE_EXPORT VideoFrameReceiverOnTaskRunner
+    : public VideoFrameReceiver {
+ public:
+  explicit VideoFrameReceiverOnTaskRunner(
+      const base::WeakPtr<VideoFrameReceiver>& receiver,
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
+  ~VideoFrameReceiverOnTaskRunner() override;
+
+  void OnNewBufferHandle(
+      int buffer_id,
+      std::unique_ptr<VideoCaptureDevice::Client::Buffer::HandleProvider>
+          handle_provider) override;
+  void OnFrameReadyInBuffer(
+      int buffer_id,
+      int frame_feedback_id,
+      std::unique_ptr<
+          VideoCaptureDevice::Client::Buffer::ScopedAccessPermission>
+          buffer_read_permission,
+      mojom::VideoFrameInfoPtr frame_info) override;
+  void OnBufferRetired(int buffer_id) override;
+  void OnError() override;
+  void OnLog(const std::string& message) override;
+  void OnStarted() override;
+  void OnStartedUsingGpuDecode() override;
+
+ private:
+  const base::WeakPtr<VideoFrameReceiver> receiver_;
+  const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_CAPTURE_VIDEO_VIDEO_FRAME_RECEIVER_ON_TASK_RUNNER_H_