Revert of Forward output glitch information from stream WebRTC log

media/audio/mac/audio_low_latency_input_mac_unittest.cc

Index: media/audio/mac/audio_low_latency_input_mac_unittest.cc
diff --git a/media/audio/mac/audio_low_latency_input_mac_unittest.cc b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
index 38e0dbd849a9bfe7ae80290a28e09cbcd066c408..bb40aad413f25c5859733d2bb87c4ca0b65d0c12 100644
--- a/media/audio/mac/audio_low_latency_input_mac_unittest.cc
+++ b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
@@ -134,8 +134,7 @@
     AudioInputStream* ais = audio_manager_->MakeAudioInputStream(
         AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY,
                         CHANNEL_LAYOUT_STEREO, fs, 16, samples_per_packet),
-        AudioDeviceDescription::kDefaultDeviceId,
-        base::Bind(&MacAudioInputTest::OnLogMessage, base::Unretained(this)));
+        AudioDeviceDescription::kDefaultDeviceId);
     EXPECT_TRUE(ais);
     return ais;
   }
@@ -148,17 +147,13 @@
     AudioInputStream* ais = audio_manager_->MakeAudioInputStream(
         AudioParameters(AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout,
                         fs, 16, samples_per_packet),
-        AudioDeviceDescription::kDefaultDeviceId,
-        base::Bind(&MacAudioInputTest::OnLogMessage, base::Unretained(this)));
+        AudioDeviceDescription::kDefaultDeviceId);
     EXPECT_TRUE(ais);
     return ais;
   }
 
-  void OnLogMessage(const std::string& message) { log_message_ = message; }
-
   base::MessageLoop message_loop_;
   ScopedAudioManagerPtr audio_manager_;
-  std::string log_message_;
 };
 
 // Test Create(), Close().
@@ -221,8 +216,6 @@
   run_loop.Run();
   ais->Stop();
   ais->Close();
-
-  EXPECT_FALSE(log_message_.empty());
 }
 
 // Verify that recording starts and stops correctly in mono using mocked sink.
@@ -256,8 +249,6 @@
   run_loop.Run();
   ais->Stop();
   ais->Close();
-
-  EXPECT_FALSE(log_message_.empty());
 }
 
 // This test is intended for manual tests and should only be enabled