VideoCaptureDeviceWin: Extract class-static method into a Factory (both MF/DS)

media/media.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Override to dynamically link the cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 487 matching lines @@
         'video/capture/win/capability_list_win.h',
         'video/capture/win/filter_base_win.cc',
         'video/capture/win/filter_base_win.h',
         'video/capture/win/pin_base_win.cc',
         'video/capture/win/pin_base_win.h',
         'video/capture/win/sink_filter_observer_win.h',
         'video/capture/win/sink_filter_win.cc',
         'video/capture/win/sink_filter_win.h',
         'video/capture/win/sink_input_pin_win.cc',
         'video/capture/win/sink_input_pin_win.h',
+        'video/capture/win/video_capture_device_factory_win.cc',
+        'video/capture/win/video_capture_device_factory_win.h',
         'video/capture/win/video_capture_device_mf_win.cc',
         'video/capture/win/video_capture_device_mf_win.h',
         'video/capture/win/video_capture_device_win.cc',
         'video/capture/win/video_capture_device_win.h',
         'video/picture.cc',
         'video/picture.h',
         'video/video_decode_accelerator.cc',
         'video/video_decode_accelerator.h',
         'video/video_encode_accelerator.cc',
         'video/video_encode_accelerator.h',
@@ skipping 1210 matching lines @@
                   ],
                 }],
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }