Remove more CriticalSectionWrappers.

webrtc/modules/pacing/paced_sender.h

Index: webrtc/modules/pacing/paced_sender.h
diff --git a/webrtc/modules/pacing/paced_sender.h b/webrtc/modules/pacing/paced_sender.h
index 320e62f076954615745cd6e98165e72b832dfb6b..3b5fe2e45e03459d5a4bc4397c77161598c44f69 100644
--- a/webrtc/modules/pacing/paced_sender.h
+++ b/webrtc/modules/pacing/paced_sender.h
@@ -15,6 +15,7 @@
 #include <memory>
 #include <set>
 
+#include "webrtc/base/criticalsection.h"
 #include "webrtc/base/optional.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/include/module.h"
@@ -25,7 +26,6 @@ namespace webrtc {
 class AlrDetector;
 class BitrateProber;
 class Clock;
-class CriticalSectionWrapper;
 class ProbeClusterCreatedObserver;
 class RtcEventLog;
 
@@ -162,7 +162,7 @@ class PacedSender : public Module, public RtpPacketSender {
   PacketSender* const packet_sender_;
   std::unique_ptr<AlrDetector> alr_detector_ GUARDED_BY(critsect_);
 
-  std::unique_ptr<CriticalSectionWrapper> critsect_;
+  rtc::CriticalSection critsect_;
   bool paused_ GUARDED_BY(critsect_);
   // This is the media budget, keeping track of how many bits of media
   // we can pace out during the current interval.