Remove BitrateController dependency fromVideoReceiveStream.

I have another CL moving REMB from CongestonController to Call, then
I'll remove CongestoinController from this class too.

R=stefan@webrtc.org

Review URL: https://codereview.webrtc.org/1442003002 .

Cr-Commit-Position: refs/heads/master@{#10632}

webrtc/video/video_receive_stream.cc

@@ -18,7 +18,6 @@
 #include "webrtc/base/logging.h"
 #include "webrtc/call/congestion_controller.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
-#include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
 #include "webrtc/system_wrappers/include/clock.h"
 #include "webrtc/video/receive_statistics_proxy.h"
 #include "webrtc/video_engine/call_stats.h"
@@ -161,9 +160,7 @@ VideoReceiveStream::VideoReceiveStream(
 
   vie_channel_.reset(new ViEChannel(
       num_cpu_cores, &transport_adapter_, process_thread, nullptr,
-      congestion_controller_->GetBitrateController()->
-          CreateRtcpBandwidthObserver(),
-      nullptr, bitrate_estimator, call_stats_->rtcp_rtt_stats(),
+      nullptr, nullptr, bitrate_estimator, call_stats_->rtcp_rtt_stats(),
       congestion_controller_->pacer(), congestion_controller_->packet_router(),
       1, false));
 

webrtc/video_engine/vie_channel.cc

@@ -122,8 +122,8 @@ ViEChannel::ViEChannel(uint32_t number_of_cores,
           CreateRtpRtcpModules(!sender,
                                vie_receiver_.GetReceiveStatistics(),
                                transport,
-                               sender ? intra_frame_observer_ : nullptr,
-                               sender ? bandwidth_observer_.get() : nullptr,
+                               intra_frame_observer_,
+                               bandwidth_observer_.get(),
                                transport_feedback_observer_,
                                rtt_stats_,
                                &rtcp_packet_type_counter_observer_,