Test and fix for huge bwe drop after alr state.

webrtc/audio/test/low_bandwidth_audio_test.h

Index: webrtc/audio/test/low_bandwidth_audio_test.h
diff --git a/webrtc/audio/test/low_bandwidth_audio_test.h b/webrtc/audio/test/low_bandwidth_audio_test.h
index eae650af22ca167fde67aff7713f3391d1e554cf..08528acce27a40c581cae565b0d4f169a30ec34d 100644
--- a/webrtc/audio/test/low_bandwidth_audio_test.h
+++ b/webrtc/audio/test/low_bandwidth_audio_test.h
@@ -53,6 +53,7 @@ class AudioQualityTest : public test::EndToEndTest {
 
  private:
   test::FakeAudioDevice* send_audio_device_;
+  Call* sender_call_;
 };
 
 }  // namespace test