Change scoped_ptr to std::unique_ptr in //net.

net/tools/quic/quic_packet_writer_wrapper.h

Index: net/tools/quic/quic_packet_writer_wrapper.h
diff --git a/net/tools/quic/quic_packet_writer_wrapper.h b/net/tools/quic/quic_packet_writer_wrapper.h
index 92044c020d0aae1406878f8c8083f2fe2ed158d6..34642a6282de4eebfb09e4caa16e951ffc3c3bc8 100644
--- a/net/tools/quic/quic_packet_writer_wrapper.h
+++ b/net/tools/quic/quic_packet_writer_wrapper.h
@@ -7,8 +7,9 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "net/quic/quic_packet_writer.h"
 
 namespace net {
@@ -38,7 +39,7 @@ class QuicPacketWriterWrapper : public QuicPacketWriter {
   void set_writer(QuicPacketWriter* writer);
 
  private:
-  scoped_ptr<QuicPacketWriter> writer_;
+  std::unique_ptr<QuicPacketWriter> writer_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicPacketWriterWrapper);
 };