MSE: Log buffered audio splice generation to media-internals

media/filters/source_buffer_stream.h

Index: media/filters/source_buffer_stream.h
diff --git a/media/filters/source_buffer_stream.h b/media/filters/source_buffer_stream.h
index b4063602c8745da415735db688457f1a9c6b20a7..87794ee8e242dfaf4f7732bc8d0188d0f5a72873 100644
--- a/media/filters/source_buffer_stream.h
+++ b/media/filters/source_buffer_stream.h
@@ -419,6 +419,11 @@ class MEDIA_EXPORT SourceBufferStream {
   // Indicates that splice frame generation is enabled.
   const bool splice_frames_enabled_;
 
+  // To prevent log spam, count the number of splice generation warnings and
+  // successes logged.
+  int num_splice_generation_warning_logs_;
+  int num_splice_generation_success_logs_;
+
   DISALLOW_COPY_AND_ASSIGN(SourceBufferStream);
 };