media: Update comments in video_capture_device_factory.h

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 e57ffc0f58932cc158c2487ec7ba315dc44a448c..f1ebde74c125ec1a0dce381b2ac148189c172677 100644
--- a/media/capture/video/video_capture_device_factory.h
+++ b/media/capture/video/video_capture_device_factory.h
@@ -13,7 +13,7 @@ namespace media {
 
 // VideoCaptureDeviceFactory is the base class for creation of video capture
 // devices in the different platforms. VCDFs are created by MediaStreamManager
-// on IO thread and plugged into VideoCaptureManager, who owns and operates them
+// on UI thread and plugged into VideoCaptureManager, who owns and operates them
 // in Device Thread (a.k.a. Audio Thread).
 // Typical operation is to first call GetDeviceDescriptors() to obtain
 // information about available devices. The obtained descriptors can then be