MSE: Log buffered audio splice generation to media-internals

content/renderer/media/render_media_log_unittest.cc

Index: content/renderer/media/render_media_log_unittest.cc
diff --git a/content/renderer/media/render_media_log_unittest.cc b/content/renderer/media/render_media_log_unittest.cc
index fd1926392c349ca07b3f0189e18cb5c12dd96d99..ea6fba51fa7bd43cd6d708663a8fb0317f4c275b 100644
--- a/content/renderer/media/render_media_log_unittest.cc
+++ b/content/renderer/media/render_media_log_unittest.cc
@@ -101,8 +101,9 @@ TEST_F(RenderMediaLogTest, BufferedExtents) {
   AddEvent(media::MediaLogEvent::LOAD);
   AddEvent(media::MediaLogEvent::SEEK);
 
-  // This event is handled separately and should always appear last regardless
-  // of how many times we see it.
+  // This event is handled separately and should always appear last (or next to
+  // last, if we have an audio splice statistics update, too) regardless of how
+  // many times we see it.
   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
   AddEvent(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED);
@@ -120,4 +121,28 @@ TEST_F(RenderMediaLogTest, BufferedExtents) {
   EXPECT_EQ(media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED, events[2].type);
 }
 
+TEST_F(RenderMediaLogTest, BufferedAudioSpliceStatistics) {
+  AddEvent(media::MediaLogEvent::LOAD);
+  AddEvent(media::MediaLogEvent::SEEK);
+
+  // This event is handled separately and should always appear last regardless
+  // of how many times we see it.
+  AddEvent(media::MediaLogEvent::BUFFERED_AUDIO_SPLICE_STATISTICS_CHANGED);
+  AddEvent(media::MediaLogEvent::BUFFERED_AUDIO_SPLICE_STATISTICS_CHANGED);
+  AddEvent(media::MediaLogEvent::BUFFERED_AUDIO_SPLICE_STATISTICS_CHANGED);
+
+  EXPECT_EQ(0, message_count());
+  Advance(base::TimeDelta::FromMilliseconds(1000));
+  EXPECT_EQ(1, message_count());
+
+  // Verify contents. There should only be a single buffered audio splice
+  // statistics changed event.
+  std::vector<media::MediaLogEvent> events = GetMediaLogEvents();
+  ASSERT_EQ(3u, events.size());
+  EXPECT_EQ(media::MediaLogEvent::LOAD, events[0].type);
+  EXPECT_EQ(media::MediaLogEvent::SEEK, events[1].type);
+  EXPECT_EQ(media::MediaLogEvent::BUFFERED_AUDIO_SPLICE_STATISTICS_CHANGED,
+            events[2].type);
+}
+
 }  // namespace content