File video capture device supports MJPEG format

media/capture/video/file_video_capture_device_factory.cc

Index: media/capture/video/file_video_capture_device_factory.cc
diff --git a/media/capture/video/file_video_capture_device_factory.cc b/media/capture/video/file_video_capture_device_factory.cc
index 1d7ae1264300dae28b89711e4b52f6ffcc25f3cd..ea36c4d70bcbb5b0f21d4dae00933790284c5ebb 100644
--- a/media/capture/video/file_video_capture_device_factory.cc
+++ b/media/capture/video/file_video_capture_device_factory.cc
@@ -63,13 +63,13 @@ void FileVideoCaptureDeviceFactory::GetDeviceSupportedFormats(
     const VideoCaptureDevice::Name& device,
     VideoCaptureFormats* supported_formats) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  base::File file =
-      FileVideoCaptureDevice::OpenFileForRead(GetFilePathFromCommandLine());
-  if (!file.IsValid())
-    return;
+
   VideoCaptureFormat capture_format;
-  FileVideoCaptureDevice::ParseFileAndExtractVideoFormat(&file,
-                                                         &capture_format);
+  if (!FileVideoCaptureDevice::GetVideoCaptureFormat(
+        GetFilePathFromCommandLine(), &capture_format)) {
+    return;
+  }
+
   supported_formats->push_back(capture_format);
 }