NackModule2: Rename to NackRequester.

The alternative new name proposed, NackTracker, is already in
use in audio_coding.

Fixed: webrtc:11594
Change-Id: I6a05fafc05fa7ddb18ea4f64886a135e5ef59f7e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226744
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Markus Handell <handellm@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34539}
diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
index 8929ab4..daddae9 100644
--- a/video/rtp_video_stream_receiver2.cc
+++ b/video/rtp_video_stream_receiver2.cc
@@ -39,7 +39,7 @@
 #include "modules/video_coding/frame_object.h"
 #include "modules/video_coding/h264_sprop_parameter_sets.h"
 #include "modules/video_coding/h264_sps_pps_tracker.h"
-#include "modules/video_coding/nack_module2.h"
+#include "modules/video_coding/nack_requester.h"
 #include "modules/video_coding/packet_buffer.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/location.h"
@@ -103,7 +103,7 @@
   return rtp_rtcp;
 }
 
-std::unique_ptr<NackModule2> MaybeConstructNackModule(
+std::unique_ptr<NackRequester> MaybeConstructNackModule(
     TaskQueueBase* current_queue,
     NackPeriodicProcessor* nack_periodic_processor,
     const VideoReceiveStream::Config& config,
@@ -114,9 +114,9 @@
     return nullptr;
 
   // TODO(bugs.webrtc.org/12420): pass rtp_history_ms to the nack module.
-  return std::make_unique<NackModule2>(current_queue, nack_periodic_processor,
-                                       clock, nack_sender,
-                                       keyframe_request_sender);
+  return std::make_unique<NackRequester>(current_queue, nack_periodic_processor,
+                                         clock, nack_sender,
+                                         keyframe_request_sender);
 }
 
 static const int kPacketLogIntervalMs = 10000;