Fix incorrect opus seek preroll and flaky pre-skip removal.

media/filters/ffmpeg_demuxer.h

Index: media/filters/ffmpeg_demuxer.h
diff --git a/media/filters/ffmpeg_demuxer.h b/media/filters/ffmpeg_demuxer.h
index 98ee3b2844aa4ae9c12b0719a18ee24a99be8658..f356f3b32358dfc672bf68759cf0b0cf549c28c5 100644
--- a/media/filters/ffmpeg_demuxer.h
+++ b/media/filters/ffmpeg_demuxer.h
@@ -77,12 +77,12 @@ class FFmpegDemuxerStream : public DemuxerStream {
 
   base::TimeDelta duration() const { return duration_; }
 
-  // Enables fixes for ogg files with negative timestamps.  For AUDIO streams,
-  // all packets with negative timestamps will be marked for post-decode
-  // discard.  For all other stream types, if FFmpegDemuxer::start_time() is
-  // negative, it will not be used to shift timestamps during EnqueuePacket().
-  void enable_negative_timestamp_fixups_for_ogg() {
-    fixup_negative_ogg_timestamps_ = true;
+  // Enables fixes for files with negative timestamps.  For AUDIO streams, all
+  // packets with negative timestamps will be marked for post-decode discard.
+  // For all other stream types, if FFmpegDemuxer::start_time() is negative, it
+  // will not be used to shift timestamps during EnqueuePacket().
+  void enable_negative_timestamp_fixups() {
+    fixup_negative_timestamps_ = true;
   }
 
   // DemuxerStream implementation.
@@ -155,7 +155,7 @@ class FFmpegDemuxerStream : public DemuxerStream {
 #endif
 
   std::string encryption_key_id_;
-  bool fixup_negative_ogg_timestamps_;
+  bool fixup_negative_timestamps_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream);
 };