Remove VideoDecoderConfig.frame_rate_xxx() & VideoFrame:Get/SetDuration()

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index 8c29c9bb938b6f0ac4751ebce093d3c60b514c21..1a4e41808006e792eb3ecd3a636f5eaaea0ad7a0 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -254,8 +254,6 @@ void AVStreamToVideoDecoderConfig(
                      profile,
                      PixelFormatToVideoFormat(stream->codec->pix_fmt),
                      coded_size, visible_rect,
-                     stream->r_frame_rate.num,
-                     stream->r_frame_rate.den,
                      aspect_ratio.num,
                      aspect_ratio.den,
                      stream->codec->extradata,
@@ -356,14 +354,6 @@ PixelFormat VideoFormatToPixelFormat(VideoFrame::Format video_format) {
   return PIX_FMT_NONE;
 }
 
-base::TimeDelta GetFrameDuration(const VideoDecoderConfig& config) {
-  AVRational time_base = {
-    config.frame_rate_denominator(),
-    config.frame_rate_numerator()
-  };
-  return ConvertFromTimeBase(time_base, 1);
-}
-
 void DestroyAVFormatContext(AVFormatContext* format_context) {
   DCHECK(format_context);