media: Update comments in video_capture_device_factory.h

media/capture/video/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_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_FACTORY_H_
 #define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_FACTORY_H_
 
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
 #include "media/capture/video/video_capture_device.h"
 
 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
 // 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 {
@@ skipping 29 matching lines @@
  private:
   static VideoCaptureDeviceFactory* CreateVideoCaptureDeviceFactory(
       scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceFactory);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_FACTORY_H_