Hacking ffvp9 decoder support for profiling.

media/filters/ffmpeg_demuxer.cc

Index: media/filters/ffmpeg_demuxer.cc
diff --git a/media/filters/ffmpeg_demuxer.cc b/media/filters/ffmpeg_demuxer.cc
index c7e00ce5c5f235becbf20499e099c406f5ded6f6..fb31f4bdf56b4c728984a3b6a92b822d8c07438e 100644
--- a/media/filters/ffmpeg_demuxer.cc
+++ b/media/filters/ffmpeg_demuxer.cc
@@ -525,9 +525,13 @@ void FFmpegDemuxerStream::EnqueuePacket(ScopedAVPacket packet) {
     // Fixing chained ogg is non-trivial, so for now just reuse the last good
     // timestamp.  The decoder will rewrite the timestamps to be sample accurate
     // later.  See http://crbug.com/396864.
-    if (fixup_negative_timestamps_ &&
-        (buffer->timestamp() == kNoTimestamp() ||
-         buffer->timestamp() < last_packet_timestamp_)) {
+    //
+    // TODO(dalecurtis): ffvp9 packet parser generates AV_NOPTS packets when a
+    // superframe is split, so adjust timestamps here...
+    // TODO(chcunningham): It may be that some super frame parts are correct to
+    // have PTS as they aren't intended for rendering.
+    if ((fixup_negative_timestamps_ || buffer->timestamp() == kNoTimestamp()) &&
+        (buffer->timestamp() < last_packet_timestamp_)) {
       buffer->set_timestamp(last_packet_timestamp_ +
                             (last_packet_duration_ != kNoTimestamp()
                                  ? last_packet_duration_