This is the VideoCaptureDevice implementation for windows.

media/media.gyp

Index: media/media.gyp
===================================================================
--- media/media.gyp	(revision 90741)
+++ media/media.gyp	(working copy)
@@ -182,6 +182,17 @@
         'video/capture/linux/video_capture_device_linux.h',
         'video/capture/video_capture.h',
         'video/capture/video_capture_device.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_win.cc',
+        'video/capture/win/video_capture_device_win.h',
         'video/capture/video_capture_device_dummy.cc',
         'video/capture/video_capture_device_dummy.h',
         'video/capture/video_capture_types.h',
@@ -236,6 +247,12 @@
             ],
           },
         }],
+        ['OS=="win"', {
+          'sources!': [
+            'video/capture/video_capture_device_dummy.cc',
+            'video/capture/video_capture_device_dummy.h',
+          ],
+        }],
       ],
     },
     {
@@ -409,6 +426,7 @@
         'filters/file_data_source_unittest.cc',
         'filters/rtc_video_decoder_unittest.cc',
         'filters/video_renderer_base_unittest.cc',
+        'video/capture/video_capture_device_unittest.cc',
         'video/ffmpeg_video_decode_engine_unittest.cc',
       ],
     },