Cast: Remove LoggingStats in favor of event subscribers.

media/cast/audio_sender/audio_encoder_unittest.cc

Index: media/cast/audio_sender/audio_encoder_unittest.cc
diff --git a/media/cast/audio_sender/audio_encoder_unittest.cc b/media/cast/audio_sender/audio_encoder_unittest.cc
index 1c8570df0ddf60aff7b0d48366fdc918c609d5b2..52b8e563348c02d4ac95940dcd2ee93bfe3a1475 100644
--- a/media/cast/audio_sender/audio_encoder_unittest.cc
+++ b/media/cast/audio_sender/audio_encoder_unittest.cc
@@ -95,8 +95,7 @@ class AudioEncoderTest : public ::testing::TestWithParam<TestScenario> {
         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
                             task_runner_,
                             task_runner_,
-                            task_runner_,
-                            GetDefaultCastSenderLoggingConfig());
+                            task_runner_);
   }
 
   virtual ~AudioEncoderTest() {}