[Mojo Video Capture] Use actual factory instances implementing media::VideoCaptureDeviceFactory

services/video_capture/mock_device_factory.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 SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_FACTORY_H_
+#define SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_FACTORY_H_
+
+#include <map>
+
+#include "media/capture/video/video_capture_device_factory.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "services/video_capture/public/interfaces/mock_video_capture_device.mojom.h"
+#include "services/video_capture/public/interfaces/video_capture_device_descriptor.mojom.h"
+#include "services/video_capture/video_capture_device_proxy_impl.h"
+
+namespace video_capture {
+
+// Implementation of media::VideoCaptureDeviceFactory that allows clients to
+// add mock devices of type mojom::VideoCaptureDeviceDescriptorPtr.
+class MockDeviceFactory : public media::VideoCaptureDeviceFactory {
+ public:
+  MockDeviceFactory();
+  ~MockDeviceFactory() override;
+
+  void AddMockDevice(mojom::MockVideoCaptureDevicePtr device,
+                     const media::VideoCaptureDeviceDescriptor& descriptor);
+
+  // media::VideoCaptureDeviceFactory:
+  std::unique_ptr<media::VideoCaptureDevice> CreateDevice(
+      const media::VideoCaptureDeviceDescriptor& device_descriptor) override;
+  void GetDeviceDescriptors(
+      media::VideoCaptureDeviceDescriptors* device_descriptors) override;
+  void GetSupportedFormats(
+      const media::VideoCaptureDeviceDescriptor& device_descriptor,
+      media::VideoCaptureFormats* supported_formats) override;
+
+ private:
+  std::map<media::VideoCaptureDeviceDescriptor,
+           mojom::MockVideoCaptureDevicePtr>
+      devices_;
+};
+
+}  // namespace video_capture
+
+#endif  // SERVICES_VIDEO_CAPTURE_MOCK_DEVICE_FACTORY_H_