Hide RtcEvent members behind accessors

Bug: webrtc:8111
Change-Id: I3d350a6e159330aed7362162006860ac86ed7c32
Reviewed-on: https://webrtc-review.googlesource.com/c/109881
Commit-Queue: Elad Alon <eladalon@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25590}
diff --git a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
index 5948ac3..be9550a 100644
--- a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
+++ b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl_unittest.cc
@@ -51,7 +51,7 @@
     return false;
   }
   auto ana_event = static_cast<RtcEventAudioNetworkAdaptation*>(arg);
-  return *ana_event->config_ == config;
+  return ana_event->config() == config;
 }
 
 MATCHER_P(EncoderRuntimeConfigIs, config, "") {