[Mojo Video Capture] Use string keys instead of VideoCaptureDeviceDescriptor

media/capture/video/video_capture_device_factory.h

Index: media/capture/video/video_capture_device_factory.h
diff --git a/media/capture/video/video_capture_device_factory.h b/media/capture/video/video_capture_device_factory.h
index 652320af05a5a1b96de259e8d83b09bff98c1a45..49d9519fee9bbb57d2a3ca84029db4cea2f6a2ff 100644
--- a/media/capture/video/video_capture_device_factory.h
+++ b/media/capture/video/video_capture_device_factory.h
@@ -20,6 +20,9 @@ namespace media {
 // used to either obtain the supported formats of a device using
 // GetSupportedFormats(), or to create an instance of VideoCaptureDevice for
 // the device using CreateDevice().
+// TODO(chfremer): Add a layer on top of the platform-specific implementations
+// that uses strings instead of descriptors as keys for accessing devices.
+// crbug.com/665065
 class CAPTURE_EXPORT VideoCaptureDeviceFactory {
  public:
   static std::unique_ptr<VideoCaptureDeviceFactory> CreateFactory(