Issue a parse error on unexpected negative timestamps.

media/filters/ffmpeg_demuxer_unittest.cc

Index: media/filters/ffmpeg_demuxer_unittest.cc
diff --git a/media/filters/ffmpeg_demuxer_unittest.cc b/media/filters/ffmpeg_demuxer_unittest.cc
index 36ff7e1afae4e3b6fe1ba8c9b65a0a98e18ceb50..9be2465897ef9698db537d3a23b8879d6af3ae9e 100644
--- a/media/filters/ffmpeg_demuxer_unittest.cc
+++ b/media/filters/ffmpeg_demuxer_unittest.cc
@@ -291,16 +291,6 @@ TEST_F(FFmpegDemuxerTest, Initialize_OpenFails) {
   event.RunAndWaitForStatus(DEMUXER_ERROR_COULD_NOT_OPEN);
 }
 
-// TODO(acolwell): Uncomment this test when we discover a file that passes
-// avformat_open_input(), but has avformat_find_stream_info() fail.
-//
-//TEST_F(FFmpegDemuxerTest, Initialize_ParseFails) {
-//  ("find_stream_info_fail.webm");
-//  demuxer_->Initialize(
-//      &host_, NewExpectedStatusCB(DEMUXER_ERROR_COULD_NOT_PARSE));
-//  base::RunLoop().RunUntilIdle();
-//}
-
 TEST_F(FFmpegDemuxerTest, Initialize_NoStreams) {
   // Open a file with no streams whatsoever.
   CreateDemuxer("no_streams.webm");
@@ -631,6 +621,13 @@ TEST_F(FFmpegDemuxerTest, Read_AudioNoStartTime) {
   }
 }
 
+TEST_F(FFmpegDemuxerTest, Read_InvalidNegativeTimestamp) {
+  CreateDemuxer("negative_ts.flac");
+  InitializeDemuxer();
+  EXPECT_CALL(host_, OnDemuxerError(DEMUXER_ERROR_COULD_NOT_PARSE));
+  ReadUntilEndOfStream(GetStream(DemuxerStream::AUDIO));
+}
+
 // TODO(dalecurtis): Test is disabled since FFmpeg does not currently guarantee
 // the order of demuxed packets in OGG containers.  Re-enable and fix key frame
 // expectations once we decide to either workaround it or attempt a fix