Deprecate FLAGS_quic_stream_sequencer_buffer_debug.

net/quic/core/quic_stream_sequencer_test.cc

Index: net/quic/core/quic_stream_sequencer_test.cc
diff --git a/net/quic/core/quic_stream_sequencer_test.cc b/net/quic/core/quic_stream_sequencer_test.cc
index b3b473f020a8cd85dbb8c8f835f4462e406fcf4f..c3b19d32607f71610c48883fb36bd1eccaaadd22 100644
--- a/net/quic/core/quic_stream_sequencer_test.cc
+++ b/net/quic/core/quic_stream_sequencer_test.cc
@@ -663,7 +663,6 @@ TEST_F(QuicStreamSequencerTest, OutOfOrderTimestamps) {
 }
 
 TEST_F(QuicStreamSequencerTest, OnStreamFrameWithNullSource) {
-  FLAGS_quic_stream_sequencer_buffer_debug = true;
   // Pass in a frame with data pointing to null address, expect to close
   // connection with error.
   StringPiece source(nullptr, 5u);
@@ -674,7 +673,6 @@ TEST_F(QuicStreamSequencerTest, OnStreamFrameWithNullSource) {
 }
 
 TEST_F(QuicStreamSequencerTest, ReadvError) {
-  FLAGS_quic_stream_sequencer_buffer_debug = true;
   EXPECT_CALL(stream_, OnDataAvailable());
   string source(100, 'a');
   OnFrame(0u, source.data());