Replace scoped_ptr with unique_ptr in webrtc/modules/audio_coding/neteq/

BUG=webrtc:5520

Review URL: https://codereview.webrtc.org/1697823002

Cr-Commit-Position: refs/heads/master@{#11616}
diff --git a/webrtc/modules/audio_coding/neteq/tools/packet.cc b/webrtc/modules/audio_coding/neteq/tools/packet.cc
index 2b2fcc2..46fd0cb 100644
--- a/webrtc/modules/audio_coding/neteq/tools/packet.cc
+++ b/webrtc/modules/audio_coding/neteq/tools/packet.cc
@@ -12,6 +12,8 @@
 
 #include <string.h>
 
+#include <memory>
+
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_header_parser.h"
 
@@ -55,7 +57,7 @@
       virtual_packet_length_bytes_(allocated_bytes),
       virtual_payload_length_bytes_(0),
       time_ms_(time_ms) {
-  rtc::scoped_ptr<RtpHeaderParser> parser(RtpHeaderParser::Create());
+  std::unique_ptr<RtpHeaderParser> parser(RtpHeaderParser::Create());
   valid_header_ = ParseHeader(*parser);
 }
 
@@ -70,7 +72,7 @@
       virtual_packet_length_bytes_(virtual_packet_length_bytes),
       virtual_payload_length_bytes_(0),
       time_ms_(time_ms) {
-  rtc::scoped_ptr<RtpHeaderParser> parser(RtpHeaderParser::Create());
+  std::unique_ptr<RtpHeaderParser> parser(RtpHeaderParser::Create());
   valid_header_ = ParseHeader(*parser);
 }