Let WebSourceBufferImpl::setMode() update SourceState::sequence_mode_

media/filters/chunk_demuxer_unittest.cc

Index: media/filters/chunk_demuxer_unittest.cc
diff --git a/media/filters/chunk_demuxer_unittest.cc b/media/filters/chunk_demuxer_unittest.cc
index 2a88a3e5b6a43245a134c44d594b6267eb1ffc73..224e89adc566b9bd66a2c8764a4172f7c0906a9f 100644
--- a/media/filters/chunk_demuxer_unittest.cc
+++ b/media/filters/chunk_demuxer_unittest.cc
@@ -2631,7 +2631,7 @@ TEST_F(ChunkDemuxerTest, TimestampOffsetSeparateStreams) {
   GenerateAudioStreamExpectedReads(27300, 4);
 }
 
-TEST_F(ChunkDemuxerTest, TimestampOffsetMidParse) {
+TEST_F(ChunkDemuxerTest, TimestampOffsetMidMediaSegment) {
   ASSERT_TRUE(InitDemuxer(HAS_AUDIO | HAS_VIDEO));
 
   scoped_ptr<Cluster> cluster = GenerateCluster(0, 2);
@@ -2649,6 +2649,24 @@ TEST_F(ChunkDemuxerTest, TimestampOffsetMidParse) {
       kSourceId, base::TimeDelta::FromSeconds(25)));
 }
 
+TEST_F(ChunkDemuxerTest, SetSequenceModeMidMediaSegment) {
+  ASSERT_TRUE(InitDemuxer(HAS_AUDIO | HAS_VIDEO));
+
+  scoped_ptr<Cluster> cluster = GenerateCluster(0, 2);
+  // Append only part of the cluster data.
+  AppendData(cluster->data(), cluster->size() - 13);
+
+  // Setting append mode should fail because we're in the middle of a cluster.
+  ASSERT_FALSE(demuxer_->SetSequenceMode(kSourceId, true));
+  ASSERT_FALSE(demuxer_->SetSequenceMode(kSourceId, false));
+
+  demuxer_->Abort(kSourceId);
+  // After Abort(), setting append mode should succeed since we're no longer
+  // in the middle of a cluster.
+  ASSERT_TRUE(demuxer_->SetSequenceMode(kSourceId, true));
+  ASSERT_TRUE(demuxer_->SetSequenceMode(kSourceId, false));
+}
+
 TEST_F(ChunkDemuxerTest, DurationChange) {
   ASSERT_TRUE(InitDemuxer(HAS_AUDIO | HAS_VIDEO));
   const int kStreamDuration = kDefaultDuration().InMilliseconds();