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

media/video/capture/fake_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.
+
+// Implementation of a fake VideoCaptureDeviceFactory class.
+
+#ifndef MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_FACTORY_H_
+#define MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_FACTORY_H_
+
+#include "media/video/capture/video_capture_device_factory.h"
+
+namespace media {
+
+// Extension of VideoCaptureDeviceFactory to create and manipulate fake devices,
+// not including file-based ones.
+class MEDIA_EXPORT FakeVideoCaptureDeviceFactory :
+    public VideoCaptureDeviceFactory {
+ public:
+  FakeVideoCaptureDeviceFactory();
+  virtual ~FakeVideoCaptureDeviceFactory() {}
+
+  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;
+
+  void set_number_of_devices(int number_of_devices) {
+    DCHECK(thread_checker_.CalledOnValidThread());
+    number_of_devices_ = number_of_devices;
+  }
+  int number_of_devices() {
+    DCHECK(thread_checker_.CalledOnValidThread());
+    return number_of_devices_;
+  }
+
+ private:
+  int number_of_devices_;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_FACTORY_H_