Re-Land: Implement AudioReceiveStream::GetStats().

R=tommi@webrtc.org
BUG=webrtc:4690

Committed: https://chromium.googlesource.com/external/webrtc/+/a457752f4afc496ed7f4d6b584b08d8635f18cc0

Review URL: https://codereview.webrtc.org/1390753002 .

Cr-Commit-Position: refs/heads/master@{#10369}

webrtc/call/bitrate_estimator_tests.cc

diff --git a/webrtc/call/bitrate_estimator_tests.cc b/webrtc/call/bitrate_estimator_tests.cc
index f7044ae..08e36c8 100644
--- a/webrtc/call/bitrate_estimator_tests.cc
+++ b/webrtc/call/bitrate_estimator_tests.cc
@@ -25,6 +25,7 @@
 #include "webrtc/test/encoder_settings.h"
 #include "webrtc/test/fake_decoder.h"
 #include "webrtc/test/fake_encoder.h"
+#include "webrtc/test/fake_voice_engine.h"
 #include "webrtc/test/frame_generator_capturer.h"
 
 namespace webrtc {
@@ -130,8 +131,10 @@
   }
 
   virtual void SetUp() {
-    receiver_call_.reset(Call::Create(Call::Config()));
-    sender_call_.reset(Call::Create(Call::Config()));
+    Call::Config config;
+    config.voice_engine = &fake_voice_engine_;
+    receiver_call_.reset(Call::Create(config));
+    sender_call_.reset(Call::Create(config));
 
     send_transport_.SetReceiver(receiver_call_->Receiver());
     receive_transport_.SetReceiver(sender_call_->Receiver());
@@ -265,6 +268,7 @@
     test::FakeDecoder fake_decoder_;
   };
 
+  test::FakeVoiceEngine fake_voice_engine_;
   TraceObserver receiver_trace_;
   test::DirectTransport send_transport_;
   test::DirectTransport receive_transport_;