FakeVideoCaptureDevice: add support for capturing into Dma-Bufs using VGEM in CrOs

media/video/capture/fake_video_capture_device.h

Index: media/video/capture/fake_video_capture_device.h
diff --git a/media/video/capture/fake_video_capture_device.h b/media/video/capture/fake_video_capture_device.h
index f4a19f9edb9c2c6611aa8d66cc15094f905ead7f..6bad68faeaece47b8de7bab09ae739853fde570b 100644
--- a/media/video/capture/fake_video_capture_device.h
+++ b/media/video/capture/fake_video_capture_device.h
@@ -17,6 +17,10 @@
 #include "base/threading/thread_checker.h"
 #include "media/video/capture/video_capture_device.h"
 
+#if defined(OS_POSIX)
+#include "base/files/scoped_file.h"
+#endif
+
 namespace media {
 
 class MEDIA_EXPORT FakeVideoCaptureDevice : public VideoCaptureDevice {
@@ -57,6 +61,11 @@ class MEDIA_EXPORT FakeVideoCaptureDevice : public VideoCaptureDevice {
   int frame_count_;
   VideoCaptureFormat capture_format_;
 
+#if defined(OS_POSIX)
+  class DrmDumbBuffer;
+  scoped_ptr<DrmDumbBuffer> drm_buffer_;
+#endif
+
   // FakeVideoCaptureDevice post tasks to itself for frame construction and
   // needs to deal with asynchronous StopAndDeallocate().
   base::WeakPtrFactory<FakeVideoCaptureDevice> weak_factory_;