Include absl/memory/memory.h if absl::make_unique is used

Tbr: kwiberg@webrtc.org
Bug: None
Change-Id: Iaf4533d2ce0e80b351a8a664ef8cf7ba0e5ec583
Reviewed-on: https://webrtc-review.googlesource.com/c/115746
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Yves Gerey <yvesg@google.com>
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26168}

test/scenario/audio_stream.cc

@@ -9,6 +9,7 @@
  */
 #include "test/scenario/audio_stream.h"
 
+#include "absl/memory/memory.h"
 #include "rtc_base/bitrateallocationstrategy.h"
 #include "test/call_test.h"
 

test/scenario/call_client.cc

@@ -11,6 +11,7 @@
 
 #include <utility>
 
+#include "absl/memory/memory.h"
 #include "logging/rtc_event_log/output/rtc_event_log_output_file.h"
 #include "modules/audio_mixer/audio_mixer_impl.h"
 #include "modules/congestion_controller/goog_cc/test/goog_cc_printer.h"

test/scenario/network_node.cc

@@ -12,6 +12,7 @@
 #include <algorithm>
 #include <vector>
 
+#include "absl/memory/memory.h"
 #include "rtc_base/numerics/safe_minmax.h"
 
 namespace webrtc {