Avoid circular dependency rtp_rtcp <-> paced_sender

webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc

Index: webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc b/webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc
index 2050ea141050c82cfea4216fa3b0aca787cee450..46dc2305a9c2f268b03747838d20895724e9f58c 100644
--- a/webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc
+++ b/webrtc/modules/remote_bitrate_estimator/remote_bitrate_estimator_abs_send_time.cc
@@ -16,7 +16,7 @@
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h"
-#include "webrtc/modules/pacing/bitrate_prober.h"
+#include "webrtc/modules/pacing/include/paced_sender.h"
 #include "webrtc/system_wrappers/interface/clock.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
 #include "webrtc/system_wrappers/interface/logging.h"
@@ -272,7 +272,7 @@ void RemoteBitrateEstimatorAbsSendTime::IncomingPacketInfo(
   // For now only try to detect probes while we don't have a valid estimate, and
   // make sure the packet was paced. We currently assume that only packets
   // larger than 200 bytes are paced by the sender.
-  was_paced = was_paced && payload_size > BitrateProber::kMinProbePacketSize;
+  was_paced = was_paced && payload_size > PacedSender::kMinProbePacketSize;
   if (was_paced &&
       (!remote_rate_.ValidEstimate() ||
        now_ms - first_packet_time_ms_ < kInitialProbingIntervalMs)) {