remove more CriticalSectionWrappers.

webrtc/modules/video_coding/receiver.h

Index: webrtc/modules/video_coding/receiver.h
diff --git a/webrtc/modules/video_coding/receiver.h b/webrtc/modules/video_coding/receiver.h
index a8d3ef3a6b21d524b2242a0bc68284ea4d8ae06e..0664d6247f570a1edfcbb1c0f559ec3a695fb528 100644
--- a/webrtc/modules/video_coding/receiver.h
+++ b/webrtc/modules/video_coding/receiver.h
@@ -14,10 +14,10 @@
 #include <memory>
 #include <vector>
 
+#include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/video_coding/jitter_buffer.h"
 #include "webrtc/modules/video_coding/packet.h"
 #include "webrtc/modules/video_coding/timing.h"
-#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/modules/video_coding/include/video_coding.h"
 #include "webrtc/modules/video_coding/include/video_coding_defines.h"
 
@@ -91,7 +91,7 @@ class VCMReceiver {
   void TriggerDecoderShutdown();
 
  private:
-  CriticalSectionWrapper* crit_sect_;
+  rtc::CriticalSection crit_sect_;
   Clock* const clock_;
   VCMJitterBuffer jitter_buffer_;
   VCMTiming* timing_;