Move splice frame setting to ChunkDemuxer(). Disable for now.

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 4abf8adcf2d73c1705303872aefcb77d8de692c6..d1fb29a1adedcddc39d3ce4286303d317cf6fe2b 100644
--- a/media/filters/source_buffer_stream.h
+++ b/media/filters/source_buffer_stream.h
@@ -53,11 +53,14 @@ class MEDIA_EXPORT SourceBufferStream {
   };
 
   SourceBufferStream(const AudioDecoderConfig& audio_config,
-                     const LogCB& log_cb);
+                     const LogCB& log_cb,
+                     bool splice_frames_enabled);
   SourceBufferStream(const VideoDecoderConfig& video_config,
-                     const LogCB& log_cb);
+                     const LogCB& log_cb,
+                     bool splice_frames_enabled);
   SourceBufferStream(const TextTrackConfig& text_config,
-                     const LogCB& log_cb);
+                     const LogCB& log_cb,
+                     bool splice_frames_enabled);
 
   ~SourceBufferStream();
 
@@ -395,6 +398,9 @@ class MEDIA_EXPORT SourceBufferStream {
   // handled out next.
   size_t splice_buffers_index_;
 
+  // Indicates that splice frame generation is enabled.
+  const bool splice_frames_enabled_;
+
   DISALLOW_COPY_AND_ASSIGN(SourceBufferStream);
 };