Extract VideoCaptureDeviceFactory out of VideoCaptureDevice and use for File and FakeVCD.

media/video/capture/file_video_capture_device_factory.h

+// Copyright 2014 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_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_FACTORY_H_
+#define MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_FACTORY_H_
+
+#include "media/video/capture/video_capture_device_factory.h"
+
+namespace media {
+
+// Extension of VideoCaptureDeviceFactory to create and manipulate file-backed
+// fake devices. These devices play back video-only files as video capture
+// input.
+class MEDIA_EXPORT FileVideoCaptureDeviceFactory :
+    public VideoCaptureDeviceFactory {
+ public:
+  FileVideoCaptureDeviceFactory() {}
+  virtual ~FileVideoCaptureDeviceFactory() {}
+
+  virtual scoped_ptr<VideoCaptureDevice> Create(
+      const VideoCaptureDevice::Name& device_name) OVERRIDE;
+  virtual void GetDeviceNames(VideoCaptureDevice::Names* device_names) OVERRIDE;
+  virtual void GetDeviceSupportedFormats(
+      const VideoCaptureDevice::Name& device,
+      VideoCaptureFormats* supported_formats) OVERRIDE;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_CAPTURE_FILE_VIDEO_CAPTURE_DEVICE_FACTORY_H_