MJPEG acceleration for video capture using VAAPI

media/video/capture/video_capture_device.h

Index: media/video/capture/video_capture_device.h
diff --git a/media/video/capture/video_capture_device.h b/media/video/capture/video_capture_device.h
index 747f1b00d3a6a98e74ab4d3091e84d9cf13e792c..bd0bafb9115af7aa872da09e3d3ef1a738aa58fa 100644
--- a/media/video/capture/video_capture_device.h
+++ b/media/video/capture/video_capture_device.h
@@ -186,6 +186,9 @@ class MEDIA_EXPORT VideoCaptureDevice {
 
     virtual ~Client() {}
 
+    // TODO(kcwu): do we need this?
+    virtual bool InitializeJpegDecoder() = 0;
+
     // Captured a new video frame, data for which is pointed to by |data|.
     //
     // The format of the frame is described by |frame_format|, and is assumed to