Log audio system used to WebRTC log.

media/audio/fake_audio_manager.cc

Index: media/audio/fake_audio_manager.cc
diff --git a/media/audio/fake_audio_manager.cc b/media/audio/fake_audio_manager.cc
index 2915e7262908bf7bd2751a17ddb1774f5348ed5b..ab9aadf906495bd9d6906293b7ea9876825c411e 100644
--- a/media/audio/fake_audio_manager.cc
+++ b/media/audio/fake_audio_manager.cc
@@ -14,6 +14,8 @@ namespace {
 const int kDefaultInputBufferSize = 1024;
 const int kDefaultSampleRate = 48000;
 
+const char kAudioManagerName[] = "Fake";
+
 }  // namespace
 
 FakeAudioManager::FakeAudioManager(
@@ -34,6 +36,10 @@ bool FakeAudioManager::HasAudioOutputDevices() { return false; }
 
 bool FakeAudioManager::HasAudioInputDevices() { return false; }
 
+const char* FakeAudioManager::GetName() {
+  return kAudioManagerName;
+}
+
 // Implementation of AudioManagerBase.
 AudioOutputStream* FakeAudioManager::MakeLinearOutputStream(
     const AudioParameters& params,