Fix include guards for QUIC files.

net/quic/core/quic_stream_sequencer_buffer_interface.h

Index: net/quic/core/quic_stream_sequencer_buffer_interface.h
diff --git a/net/quic/core/quic_stream_sequencer_buffer_interface.h b/net/quic/core/quic_stream_sequencer_buffer_interface.h
index d8ee7949ac7bf4a548292a383cf7dcb884607c54..827e486b226070b15a2c0b54d60e82abb52f51cf 100644
--- a/net/quic/core/quic_stream_sequencer_buffer_interface.h
+++ b/net/quic/core/quic_stream_sequencer_buffer_interface.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NET_QUIC_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
-#define NET_QUIC_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
+#ifndef NET_QUIC_CORE_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
+#define NET_QUIC_CORE_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
 
 #include <stddef.h>
 
@@ -74,4 +74,4 @@ class NET_EXPORT_PRIVATE QuicStreamSequencerBufferInterface {
 
 }  // namespace net
 
-#endif  // NET_QUIC_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
+#endif  // NET_QUIC_CORE_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_