Deprecate --gfe2_reloadable_flag_quic_use_stream_sequencer_buffer.

net/quic/quic_stream_sequencer.h

Index: net/quic/quic_stream_sequencer.h
diff --git a/net/quic/quic_stream_sequencer.h b/net/quic/quic_stream_sequencer.h
index 65d99baaf2851512baadb2030de8796bdd3b460f..1d06d2f2dc6747691c011a9a409ef052df9c65b9 100644
--- a/net/quic/quic_stream_sequencer.h
+++ b/net/quic/quic_stream_sequencer.h
@@ -11,8 +11,10 @@
 #include <string>
 
 #include "base/macros.h"
-#include "net/quic/quic_frame_list.h"
 #include "net/quic/quic_protocol.h"
+#include "net/quic/stream_sequencer_buffer.h"
+
+using std::string;
 
 namespace net {
 
@@ -114,7 +116,7 @@ class NET_EXPORT_PRIVATE QuicStreamSequencer {
   ReliableQuicStream* stream_;
 
   // Stores received data in offset order.
-  scoped_ptr<QuicStreamSequencerBufferInterface> buffered_frames_;
+  StreamSequencerBuffer buffered_frames_;
 
   // The offset, if any, we got a stream termination for.  When this many bytes
   // have been processed, the sequencer will be closed.